ThinkWiki - User contributions [en]

How to make use of IrDA

2007-03-05T16:22:42Z

Artaxerxes: /* LIRC and IrDA */

{| width="100%"
|style="vertical-align:top;padding-right:20px;width:10px;white-space:nowrap;" | __TOC__
|style="vertical-align:top" |
<div style="margin: 0; margin-right:10px; border: 1px solid #dfdfdf; padding: 0em 1em 1em 1em; background-color:#efefef; align:right;">
The purpose of this document is to get the [[IrDA]] hardware in your ThinkPad operational, setting up communication to other devices is not covered. However, the external links section can prove useful for this.
</div>
|}

== Serial IR (SIR) ==
SIR is limited to serial datarates up to 115.2Kb/s

To use it, run {{cmdroot|irattach /dev/ttyS1 -s; modprobe ircomm-tty}} (on {{Fedora}} 5 just run {{cmdroot|service irda start}}). Then turn on your IrDA-capable device and put it within range, and point your software (e.g., <tt>minicom</tt>) to {{path|/dev/irda0}}.

===Kernel configuration===

Some distributions (e.g., {{Fedora}} 5) already include the equvialent of the following.

==== Linux 2.4 kernel config ====
Edit {{path|/etc/modules.conf}} and add the following lines
alias tty-ldisc-11 irtty
alias char-major-161 ircomm-tty

==== Linux 2.6 kernel config ====
Edit {{path|/etc/modprobe.conf}} and add the following lines
alias tty-ldisc-11 irtty-sir
alias char-major-161 ircomm-tty

== Fast IR (FIR) ==
FIR is the preferred mode of IrDA operation and operates at a bandwidth of 4 Mbps

The chips FIR mode first needs to be activated using the ISA PnP or BIOS method.

{{HINT|Regardless of which method you use, you will still have to set the dongle_id and run setserial as shown further below}}
=== ISA PnP support for nsc-ircc ===

ISA PnP support is '''necessary''' in some cases, as without it the kernel doesn't manage to enable the device by itself in many ThinkPads.

Starting with the 2.6.17-rc1 kernel, the nsc-ircc driver has ISA PnP support. For older kernels you will need patches to allow the loading of the driver without the below BIOS change.

* [http://steffenpingel.de/patches/nsc-ircc-pnp.diff 2.6.10 patch]
* [http://shamrock.dyndns.org/~ln/linux/nsc-ircc-pnp.2.6.12-rc6.diff 2.6.12-rc6 patch]
* [http://shamrock.dyndns.org/~ln/linux/nsc-ircc-pnp.2.6.12.diff 2.6.12 patch (applies cleanly to 2.6.12 through 2.6.15)]

=== NS PC8394T support ===

Thinkpads {{T43}}, {{T43p}} and {{R52}} [http://bugzilla.kernel.org/attachment.cgi?id=8247 needed an extra patch] to detect their [[NS PC8394T]]-based FIR device on kernels before 2.6.18. They also require ISA PnP support in the driver to work, which is available since 2.6.17 (and can be added to 2.6.16 with the patches above).

=== Changing BIOS settings ===
For older kernels (prior to 2.6.17-rc1), the easiest way to activate FIR mode is by entering BIOS setup during boot-up by pressing {{key|F1}} when prompted.
Then, selecting 'Config' followed by 'Infrared' will allow you to control the IrDA operation. Here you will need to select the option to Enable the infra-red port, and ensure the proper resources are set (typically: IO 0x2f8 and IRQ 3). Be sure to save the changes, and then Exit.

{{NOTE|Changing these BIOS settings does not affect Windows 2000 or XP operating systems, but may cause resource issues in older windows versions, or other legacy operating systems.}}

{{WARN|If you change the BIOS settings for IO, IRQ or DMA of the IrDA port, remember to do so accordingly on all examples in this page when applying them to your ThinkPad.}}

===Kernel configuration===
==== Linux 2.4 kernel config ====
Edit {{path|/etc/modules.conf}} and add the following lines

alias irda0 nsc-ircc
options nsc-ircc dongle_id=0x09 io=0x2f8 irq=3 dma=3
pre-install nsc-ircc setserial /dev/ttyS1 uart none port 0 irq 0

==== Linux 2.6 kernel config ====
Edit {{path|/etc/modprobe.conf}} and add the following lines

alias irda0 nsc-ircc
options nsc-ircc dongle_id=0x09 io=0x2f8 irq=3 dma=3
install nsc-ircc /bin/setserial /dev/ttyS1 uart none port 0 irq 0; /sbin/modprobe --ignore-install nsc-ircc

The install line is a work-around for the 8250 serial driver taking over the device, and may not be needed in certain distributions.
Another way to do this is to set this kernel config option:

1. {{kernelconf|CONFIG_SERIAL_8250_RUNTIME_UARTS|(1)|Number of 8250/16550 serial ports to register at runtime|Serial drivers|Character devices|Device Drivers|}}

2. {{kernelconf|CONFIG_SERIAL_8250_NR_UARTS|(4)|Maximum number of 8250/16550 serial ports|Serial drivers|Character devices|Device Drivers|}}

This will prevent the 8250 driver from grabbing any other than the first serial port at boot time or when the module is loaded. You can still add more ports later for example from PC-Card modems, up to CONFIG_SERIAL_8250_NR_UARTS.

==== {{Gentoo}} kernel config ====
Edit / Create {{path|/etc/modules.d/nsc-irrc}} and add the following lines

alias irda0 nsc-ircc
options nsc-ircc dongle_id=0x09 io=0x2f8 irq=3 dma=3

Edit {{path|/etc/modules.autoload.d/kernel-2.6}} and add the following lines

nsc-ircc

If you have serial support build in the kernel, switch it to a module and add it after nsc-ircc to advoid io base and irq conflict. For kernel 2.4, same as 2.6 changing the path to modules.autoload.d/kernel-2.4.

==== {{Debian}} Sarge/Etch kernel config ====
Install irda-utils and set it up for serial port emulation. Edit {{path|/etc/modprobe.d/irda-utils}} and add/change the following lines:

alias irda0 nsc-ircc
options nsc-ircc dongle_id=0x09 io=0x2f8 irq=3 dma=3

Edit / create {{path|/etc/modules.conf}} and add the following line before any references to 8250*, if any:

nsc-ircc

Make sure that module-init-tools has a chance to iterate over {{path|/etc/modules.conf}} before udev does the initial pci hotplug (this is a problem at least in Debian Sarge, when using backported udev packages):

{{cmdroot|cp /etc/rcS.d/S20module-init-tools /etc/rcS.d/S03module-init-tools}}

Note that at S03, module-init-tools cannot run depmod for you, so either do it manually before you reboot into a new kernel, or reboot twice to get it to work right. This is also the reason for using cp instead of mv.

If you have the regular serial port drivers as modules, that's it. Otherwise, try adding the install line described in the Linux 2.6 kernel config section, above, or compile them as modules instead of built-in.

== Known problems ==
* If the FIR mode is not activated, attempts to load the <tt>nsc-ircc</tt> module will result in an error in syslog of "Wrong chip version ff".
* After suspend the <tt>nsc-ircc</tt> module needs to be manually reloaded
* If module reloading does not work after a suspend, try reactivating the IrDA port as well:
rmmod nsc_ircc
echo disable > /sys/devices/pnp0/00\:0d/resources
echo activate > /sys/devices/pnp0/00\:0d/resources
modprobe nsc_ircc
:The value <tt>pnp0/00\:0d</tt> can vary - look for a id file containing IBM0071 or PNP0511, or for a resources file containing the appropriate irq/dma/io values, e.g., using {{cmdroot|grep 0x2f8 /sys/devices/pnp*/*/resources}} .
{{NOTE|The power management issues should be resolved starting with the 2.6.17-rc1 kernel.}}

{{NOTE|Don't understand after inserting modules use irattach irda0 -s and after this you can use eg. minicom over /dev/ircomm0 and test link with irdadump with this I get working FIR on A21m with 2.6.18}}
* If you read something like "ttyS1: LSR safety check engaged!" and "irattach: tcgetattr: Input/output error" in the system log, try limiting the FIR max baud rate (echo 57600 > /proc/sys/net/irda/max_baud_rate). This did the trick for me when I was trying to synchronize my Ericsson T39m with my Thinkpad R51 (multisync, evolution-2.8, KDE 3.5.5, openSUSE 10.2).

== Some other things you might want to do with IrDA ==
* add fast PPP support:
:{{cmdroot|modprobe irnet}}
* if needed, limit further the size of the transmit window
:{{cmdroot|echo 1 > /proc/sys/net/irda/max_tx_window}}
* set the connection speed to 4Mbit in FIR mode:
:{{cmdroot|echo 4000000 > /proc/sys/net/irda/max_baud_rate}}

==LIRC and IrDA==
Usually, IrDA ports are not compatible with LIRC, but you may have luck using lirc_sir.

If loading the <tt>lirc_sir</tt> module shows something like the following in {{cmdroot|dmesg}} output, you are lucky and can use LIRC with the IrDA port to remote control your ThinkPad.
lirc_sir: I/O port 0x02f8, IRQ 3.
lirc_sir: Installed.

You might need to force the io and irq settings. For instance, if in your BIOS your Infrared IO is 0x03f8 and IRQ is 4, do the following when inserting the module:

modprobe lirc_sir io=0x03f8 irq=4

If it fails with "Device or resource busy", you may want to install the setserial tool and run it with {{cmdroot|setserial /dev/ttyS0 uart none}} or {{cmdroot|setserial /dev/ttyS1 uart none}}. After that lirc_sir should be loadable.

You might also need to {{cmdroot|modprobe actisys-sir}}, {{cmdroot|modprobe tekram-sir}}, and {{cmdroot|modprobe lirc-sir}} if you are using the SIR on the thinkpad (modules are from kernel 2.6).

Also, do not forget to start the lirc daemon, otherwise no output will be given (you better try running it not as a daemon first, so you can see the output).
lircd -d /dev/lirc0 /etc/lircd.conf --nodaemon
You should see:
lircd: lircd(serial) ready
This means you are good to start {{cmdroot|irrecord}} or {{cmdroot|xmode2}} and check for input.

Once that shows a good output you can configure your remote control.
then use it in applications like mplayer, xine, or KDE's remote controls server.

== External Sources ==
*[http://irda.sourceforge.net/ Linux-IrDA Project] (External)
*[http://pcmcia-cs.sourceforge.net/ Linux PCMCIA Project] (External)
*[http://tpctl.sourceforge.net/ tpctl homepage] (External)
*[http://www.lirc.org/ Linux Infrared Remote Control] (External)

How to make use of IrDA

2007-03-05T16:21:43Z

Artaxerxes: /* LIRC and IrDA */

{| width="100%"
|style="vertical-align:top;padding-right:20px;width:10px;white-space:nowrap;" | __TOC__
|style="vertical-align:top" |
<div style="margin: 0; margin-right:10px; border: 1px solid #dfdfdf; padding: 0em 1em 1em 1em; background-color:#efefef; align:right;">
The purpose of this document is to get the [[IrDA]] hardware in your ThinkPad operational, setting up communication to other devices is not covered. However, the external links section can prove useful for this.
</div>
|}

== Serial IR (SIR) ==
SIR is limited to serial datarates up to 115.2Kb/s

To use it, run {{cmdroot|irattach /dev/ttyS1 -s; modprobe ircomm-tty}} (on {{Fedora}} 5 just run {{cmdroot|service irda start}}). Then turn on your IrDA-capable device and put it within range, and point your software (e.g., <tt>minicom</tt>) to {{path|/dev/irda0}}.

===Kernel configuration===

Some distributions (e.g., {{Fedora}} 5) already include the equvialent of the following.

==== Linux 2.4 kernel config ====
Edit {{path|/etc/modules.conf}} and add the following lines
alias tty-ldisc-11 irtty
alias char-major-161 ircomm-tty

==== Linux 2.6 kernel config ====
Edit {{path|/etc/modprobe.conf}} and add the following lines
alias tty-ldisc-11 irtty-sir
alias char-major-161 ircomm-tty

== Fast IR (FIR) ==
FIR is the preferred mode of IrDA operation and operates at a bandwidth of 4 Mbps

The chips FIR mode first needs to be activated using the ISA PnP or BIOS method.

{{HINT|Regardless of which method you use, you will still have to set the dongle_id and run setserial as shown further below}}
=== ISA PnP support for nsc-ircc ===

ISA PnP support is '''necessary''' in some cases, as without it the kernel doesn't manage to enable the device by itself in many ThinkPads.

Starting with the 2.6.17-rc1 kernel, the nsc-ircc driver has ISA PnP support. For older kernels you will need patches to allow the loading of the driver without the below BIOS change.

* [http://steffenpingel.de/patches/nsc-ircc-pnp.diff 2.6.10 patch]
* [http://shamrock.dyndns.org/~ln/linux/nsc-ircc-pnp.2.6.12-rc6.diff 2.6.12-rc6 patch]
* [http://shamrock.dyndns.org/~ln/linux/nsc-ircc-pnp.2.6.12.diff 2.6.12 patch (applies cleanly to 2.6.12 through 2.6.15)]

=== NS PC8394T support ===

Thinkpads {{T43}}, {{T43p}} and {{R52}} [http://bugzilla.kernel.org/attachment.cgi?id=8247 needed an extra patch] to detect their [[NS PC8394T]]-based FIR device on kernels before 2.6.18. They also require ISA PnP support in the driver to work, which is available since 2.6.17 (and can be added to 2.6.16 with the patches above).

=== Changing BIOS settings ===
For older kernels (prior to 2.6.17-rc1), the easiest way to activate FIR mode is by entering BIOS setup during boot-up by pressing {{key|F1}} when prompted.
Then, selecting 'Config' followed by 'Infrared' will allow you to control the IrDA operation. Here you will need to select the option to Enable the infra-red port, and ensure the proper resources are set (typically: IO 0x2f8 and IRQ 3). Be sure to save the changes, and then Exit.

{{NOTE|Changing these BIOS settings does not affect Windows 2000 or XP operating systems, but may cause resource issues in older windows versions, or other legacy operating systems.}}

{{WARN|If you change the BIOS settings for IO, IRQ or DMA of the IrDA port, remember to do so accordingly on all examples in this page when applying them to your ThinkPad.}}

===Kernel configuration===
==== Linux 2.4 kernel config ====
Edit {{path|/etc/modules.conf}} and add the following lines

alias irda0 nsc-ircc
options nsc-ircc dongle_id=0x09 io=0x2f8 irq=3 dma=3
pre-install nsc-ircc setserial /dev/ttyS1 uart none port 0 irq 0

==== Linux 2.6 kernel config ====
Edit {{path|/etc/modprobe.conf}} and add the following lines

alias irda0 nsc-ircc
options nsc-ircc dongle_id=0x09 io=0x2f8 irq=3 dma=3
install nsc-ircc /bin/setserial /dev/ttyS1 uart none port 0 irq 0; /sbin/modprobe --ignore-install nsc-ircc

The install line is a work-around for the 8250 serial driver taking over the device, and may not be needed in certain distributions.
Another way to do this is to set this kernel config option:

1. {{kernelconf|CONFIG_SERIAL_8250_RUNTIME_UARTS|(1)|Number of 8250/16550 serial ports to register at runtime|Serial drivers|Character devices|Device Drivers|}}

2. {{kernelconf|CONFIG_SERIAL_8250_NR_UARTS|(4)|Maximum number of 8250/16550 serial ports|Serial drivers|Character devices|Device Drivers|}}

This will prevent the 8250 driver from grabbing any other than the first serial port at boot time or when the module is loaded. You can still add more ports later for example from PC-Card modems, up to CONFIG_SERIAL_8250_NR_UARTS.

==== {{Gentoo}} kernel config ====
Edit / Create {{path|/etc/modules.d/nsc-irrc}} and add the following lines

alias irda0 nsc-ircc
options nsc-ircc dongle_id=0x09 io=0x2f8 irq=3 dma=3

Edit {{path|/etc/modules.autoload.d/kernel-2.6}} and add the following lines

nsc-ircc

If you have serial support build in the kernel, switch it to a module and add it after nsc-ircc to advoid io base and irq conflict. For kernel 2.4, same as 2.6 changing the path to modules.autoload.d/kernel-2.4.

==== {{Debian}} Sarge/Etch kernel config ====
Install irda-utils and set it up for serial port emulation. Edit {{path|/etc/modprobe.d/irda-utils}} and add/change the following lines:

alias irda0 nsc-ircc
options nsc-ircc dongle_id=0x09 io=0x2f8 irq=3 dma=3

Edit / create {{path|/etc/modules.conf}} and add the following line before any references to 8250*, if any:

nsc-ircc

Make sure that module-init-tools has a chance to iterate over {{path|/etc/modules.conf}} before udev does the initial pci hotplug (this is a problem at least in Debian Sarge, when using backported udev packages):

{{cmdroot|cp /etc/rcS.d/S20module-init-tools /etc/rcS.d/S03module-init-tools}}

Note that at S03, module-init-tools cannot run depmod for you, so either do it manually before you reboot into a new kernel, or reboot twice to get it to work right. This is also the reason for using cp instead of mv.

If you have the regular serial port drivers as modules, that's it. Otherwise, try adding the install line described in the Linux 2.6 kernel config section, above, or compile them as modules instead of built-in.

== Known problems ==
* If the FIR mode is not activated, attempts to load the <tt>nsc-ircc</tt> module will result in an error in syslog of "Wrong chip version ff".
* After suspend the <tt>nsc-ircc</tt> module needs to be manually reloaded
* If module reloading does not work after a suspend, try reactivating the IrDA port as well:
rmmod nsc_ircc
echo disable > /sys/devices/pnp0/00\:0d/resources
echo activate > /sys/devices/pnp0/00\:0d/resources
modprobe nsc_ircc
:The value <tt>pnp0/00\:0d</tt> can vary - look for a id file containing IBM0071 or PNP0511, or for a resources file containing the appropriate irq/dma/io values, e.g., using {{cmdroot|grep 0x2f8 /sys/devices/pnp*/*/resources}} .
{{NOTE|The power management issues should be resolved starting with the 2.6.17-rc1 kernel.}}

{{NOTE|Don't understand after inserting modules use irattach irda0 -s and after this you can use eg. minicom over /dev/ircomm0 and test link with irdadump with this I get working FIR on A21m with 2.6.18}}
* If you read something like "ttyS1: LSR safety check engaged!" and "irattach: tcgetattr: Input/output error" in the system log, try limiting the FIR max baud rate (echo 57600 > /proc/sys/net/irda/max_baud_rate). This did the trick for me when I was trying to synchronize my Ericsson T39m with my Thinkpad R51 (multisync, evolution-2.8, KDE 3.5.5, openSUSE 10.2).

== Some other things you might want to do with IrDA ==
* add fast PPP support:
:{{cmdroot|modprobe irnet}}
* if needed, limit further the size of the transmit window
:{{cmdroot|echo 1 > /proc/sys/net/irda/max_tx_window}}
* set the connection speed to 4Mbit in FIR mode:
:{{cmdroot|echo 4000000 > /proc/sys/net/irda/max_baud_rate}}

==LIRC and IrDA==
Usually, IrDA ports are not compatible with LIRC, but you may have luck using lirc_sir.

If loading the <tt>lirc_sir</tt> module shows something like the following in {{cmdroot|dmesg}} output, you are lucky and can use LIRC with the IrDA port to remote control your ThinkPad.
lirc_sir: I/O port 0x02f8, IRQ 3.
lirc_sir: Installed.

You might need to force the io and irq settings. For instance, if in your BIOS your Infrared IO is 0x03f8 and IRQ is 4, do the following when inserting the module:

modprobe lirc_sir io=0x03f8 irq=4

If it fails with "Device or resource busy", you may want to install the setserial tool and run it with {{cmdroot|setserial /dev/ttyS1 uart none}}. After that lirc_sir should be loadable.

You might also need to {{cmdroot|modprobe actisys-sir}}, {{cmdroot|modprobe tekram-sir}}, and {{cmdroot|modprobe lirc-sir}} if you are using the SIR on the thinkpad (modules are from kernel 2.6).

Also, do not forget to start the lirc daemon, otherwise no output will be given (you better try running it not as a daemon first, so you can see the output).
lircd -d /dev/lirc0 /etc/lircd.conf --nodaemon
You should see:
lircd: lircd(serial) ready
This means you are good to start {{cmdroot|irrecord}} or {{cmdroot|xmode2}} and check for input.

Once that shows a good output you can configure your remote control.
then use it in applications like mplayer, xine, or KDE's remote controls server.

== External Sources ==
*[http://irda.sourceforge.net/ Linux-IrDA Project] (External)
*[http://pcmcia-cs.sourceforge.net/ Linux PCMCIA Project] (External)
*[http://tpctl.sourceforge.net/ tpctl homepage] (External)
*[http://www.lirc.org/ Linux Infrared Remote Control] (External)

How to make use of IrDA

2007-03-05T16:20:58Z

Artaxerxes: /* LIRC and IrDA */

{| width="100%"
|style="vertical-align:top;padding-right:20px;width:10px;white-space:nowrap;" | __TOC__
|style="vertical-align:top" |
<div style="margin: 0; margin-right:10px; border: 1px solid #dfdfdf; padding: 0em 1em 1em 1em; background-color:#efefef; align:right;">
The purpose of this document is to get the [[IrDA]] hardware in your ThinkPad operational, setting up communication to other devices is not covered. However, the external links section can prove useful for this.
</div>
|}

== Serial IR (SIR) ==
SIR is limited to serial datarates up to 115.2Kb/s

To use it, run {{cmdroot|irattach /dev/ttyS1 -s; modprobe ircomm-tty}} (on {{Fedora}} 5 just run {{cmdroot|service irda start}}). Then turn on your IrDA-capable device and put it within range, and point your software (e.g., <tt>minicom</tt>) to {{path|/dev/irda0}}.

===Kernel configuration===

Some distributions (e.g., {{Fedora}} 5) already include the equvialent of the following.

==== Linux 2.4 kernel config ====
Edit {{path|/etc/modules.conf}} and add the following lines
alias tty-ldisc-11 irtty
alias char-major-161 ircomm-tty

==== Linux 2.6 kernel config ====
Edit {{path|/etc/modprobe.conf}} and add the following lines
alias tty-ldisc-11 irtty-sir
alias char-major-161 ircomm-tty

== Fast IR (FIR) ==
FIR is the preferred mode of IrDA operation and operates at a bandwidth of 4 Mbps

The chips FIR mode first needs to be activated using the ISA PnP or BIOS method.

{{HINT|Regardless of which method you use, you will still have to set the dongle_id and run setserial as shown further below}}
=== ISA PnP support for nsc-ircc ===

ISA PnP support is '''necessary''' in some cases, as without it the kernel doesn't manage to enable the device by itself in many ThinkPads.

Starting with the 2.6.17-rc1 kernel, the nsc-ircc driver has ISA PnP support. For older kernels you will need patches to allow the loading of the driver without the below BIOS change.

* [http://steffenpingel.de/patches/nsc-ircc-pnp.diff 2.6.10 patch]
* [http://shamrock.dyndns.org/~ln/linux/nsc-ircc-pnp.2.6.12-rc6.diff 2.6.12-rc6 patch]
* [http://shamrock.dyndns.org/~ln/linux/nsc-ircc-pnp.2.6.12.diff 2.6.12 patch (applies cleanly to 2.6.12 through 2.6.15)]

=== NS PC8394T support ===

Thinkpads {{T43}}, {{T43p}} and {{R52}} [http://bugzilla.kernel.org/attachment.cgi?id=8247 needed an extra patch] to detect their [[NS PC8394T]]-based FIR device on kernels before 2.6.18. They also require ISA PnP support in the driver to work, which is available since 2.6.17 (and can be added to 2.6.16 with the patches above).

=== Changing BIOS settings ===
For older kernels (prior to 2.6.17-rc1), the easiest way to activate FIR mode is by entering BIOS setup during boot-up by pressing {{key|F1}} when prompted.
Then, selecting 'Config' followed by 'Infrared' will allow you to control the IrDA operation. Here you will need to select the option to Enable the infra-red port, and ensure the proper resources are set (typically: IO 0x2f8 and IRQ 3). Be sure to save the changes, and then Exit.

{{NOTE|Changing these BIOS settings does not affect Windows 2000 or XP operating systems, but may cause resource issues in older windows versions, or other legacy operating systems.}}

{{WARN|If you change the BIOS settings for IO, IRQ or DMA of the IrDA port, remember to do so accordingly on all examples in this page when applying them to your ThinkPad.}}

===Kernel configuration===
==== Linux 2.4 kernel config ====
Edit {{path|/etc/modules.conf}} and add the following lines

alias irda0 nsc-ircc
options nsc-ircc dongle_id=0x09 io=0x2f8 irq=3 dma=3
pre-install nsc-ircc setserial /dev/ttyS1 uart none port 0 irq 0

==== Linux 2.6 kernel config ====
Edit {{path|/etc/modprobe.conf}} and add the following lines

alias irda0 nsc-ircc
options nsc-ircc dongle_id=0x09 io=0x2f8 irq=3 dma=3
install nsc-ircc /bin/setserial /dev/ttyS1 uart none port 0 irq 0; /sbin/modprobe --ignore-install nsc-ircc

The install line is a work-around for the 8250 serial driver taking over the device, and may not be needed in certain distributions.
Another way to do this is to set this kernel config option:

1. {{kernelconf|CONFIG_SERIAL_8250_RUNTIME_UARTS|(1)|Number of 8250/16550 serial ports to register at runtime|Serial drivers|Character devices|Device Drivers|}}

2. {{kernelconf|CONFIG_SERIAL_8250_NR_UARTS|(4)|Maximum number of 8250/16550 serial ports|Serial drivers|Character devices|Device Drivers|}}

This will prevent the 8250 driver from grabbing any other than the first serial port at boot time or when the module is loaded. You can still add more ports later for example from PC-Card modems, up to CONFIG_SERIAL_8250_NR_UARTS.

==== {{Gentoo}} kernel config ====
Edit / Create {{path|/etc/modules.d/nsc-irrc}} and add the following lines

alias irda0 nsc-ircc
options nsc-ircc dongle_id=0x09 io=0x2f8 irq=3 dma=3

Edit {{path|/etc/modules.autoload.d/kernel-2.6}} and add the following lines

nsc-ircc

If you have serial support build in the kernel, switch it to a module and add it after nsc-ircc to advoid io base and irq conflict. For kernel 2.4, same as 2.6 changing the path to modules.autoload.d/kernel-2.4.

==== {{Debian}} Sarge/Etch kernel config ====
Install irda-utils and set it up for serial port emulation. Edit {{path|/etc/modprobe.d/irda-utils}} and add/change the following lines:

alias irda0 nsc-ircc
options nsc-ircc dongle_id=0x09 io=0x2f8 irq=3 dma=3

Edit / create {{path|/etc/modules.conf}} and add the following line before any references to 8250*, if any:

nsc-ircc

Make sure that module-init-tools has a chance to iterate over {{path|/etc/modules.conf}} before udev does the initial pci hotplug (this is a problem at least in Debian Sarge, when using backported udev packages):

{{cmdroot|cp /etc/rcS.d/S20module-init-tools /etc/rcS.d/S03module-init-tools}}

Note that at S03, module-init-tools cannot run depmod for you, so either do it manually before you reboot into a new kernel, or reboot twice to get it to work right. This is also the reason for using cp instead of mv.

If you have the regular serial port drivers as modules, that's it. Otherwise, try adding the install line described in the Linux 2.6 kernel config section, above, or compile them as modules instead of built-in.

== Known problems ==
* If the FIR mode is not activated, attempts to load the <tt>nsc-ircc</tt> module will result in an error in syslog of "Wrong chip version ff".
* After suspend the <tt>nsc-ircc</tt> module needs to be manually reloaded
* If module reloading does not work after a suspend, try reactivating the IrDA port as well:
rmmod nsc_ircc
echo disable > /sys/devices/pnp0/00\:0d/resources
echo activate > /sys/devices/pnp0/00\:0d/resources
modprobe nsc_ircc
:The value <tt>pnp0/00\:0d</tt> can vary - look for a id file containing IBM0071 or PNP0511, or for a resources file containing the appropriate irq/dma/io values, e.g., using {{cmdroot|grep 0x2f8 /sys/devices/pnp*/*/resources}} .
{{NOTE|The power management issues should be resolved starting with the 2.6.17-rc1 kernel.}}

{{NOTE|Don't understand after inserting modules use irattach irda0 -s and after this you can use eg. minicom over /dev/ircomm0 and test link with irdadump with this I get working FIR on A21m with 2.6.18}}
* If you read something like "ttyS1: LSR safety check engaged!" and "irattach: tcgetattr: Input/output error" in the system log, try limiting the FIR max baud rate (echo 57600 > /proc/sys/net/irda/max_baud_rate). This did the trick for me when I was trying to synchronize my Ericsson T39m with my Thinkpad R51 (multisync, evolution-2.8, KDE 3.5.5, openSUSE 10.2).

== Some other things you might want to do with IrDA ==
* add fast PPP support:
:{{cmdroot|modprobe irnet}}
* if needed, limit further the size of the transmit window
:{{cmdroot|echo 1 > /proc/sys/net/irda/max_tx_window}}
* set the connection speed to 4Mbit in FIR mode:
:{{cmdroot|echo 4000000 > /proc/sys/net/irda/max_baud_rate}}

==LIRC and IrDA==
Usually, IrDA ports are not compatible with LIRC, but you may have luck using lirc_sir.

If loading the <tt>lirc_sir</tt> module shows something like the following in {{cmdroot|dmesg}} output, you are lucky and can use LIRC with the IrDA port to remote control your ThinkPad.
lirc_sir: I/O port 0x02f8, IRQ 3.
lirc_sir: Installed.

You might need to force the io and irq settings. For instance, if in your BIOS your Infrared IO is 0x03f8 and IRQ is 4, do the following when inserting the module:

modprobe lirc_sir io=0x038f irq=4

If it fails with "Device or resource busy", you may want to install the setserial tool and run it with {{cmdroot|setserial /dev/ttyS1 uart none}}. After that lirc_sir should be loadable.

You might also need to {{cmdroot|modprobe actisys-sir}}, {{cmdroot|modprobe tekram-sir}}, and {{cmdroot|modprobe lirc-sir}} if you are using the SIR on the thinkpad (modules are from kernel 2.6).

Also, do not forget to start the lirc daemon, otherwise no output will be given (you better try running it not as a daemon first, so you can see the output).
lircd -d /dev/lirc0 /etc/lircd.conf --nodaemon
You should see:
lircd: lircd(serial) ready
This means you are good to start {{cmdroot|irrecord}} or {{cmdroot|xmode2}} and check for input.

Once that shows a good output you can configure your remote control.
then use it in applications like mplayer, xine, or KDE's remote controls server.

== External Sources ==
*[http://irda.sourceforge.net/ Linux-IrDA Project] (External)
*[http://pcmcia-cs.sourceforge.net/ Linux PCMCIA Project] (External)
*[http://tpctl.sourceforge.net/ tpctl homepage] (External)
*[http://www.lirc.org/ Linux Infrared Remote Control] (External)

Installing Mandriva Linux on a ThinkPad T20

2006-06-02T20:36:19Z

Artaxerxes: /* Upgrading from 2005 LE to 2006 */

=Mandriva 2006=
==Basic Installation==
The basic install of {{Mandriva}} Linux 2006 works smoothly on a ThinkPad {{T20}}. Read on for things that need tweaking.

==DVD Notes==
With appropriate software installed, the combination of Mandriva and the T20 plays DVDS fine.
However, the frame rate will be noticeably reduced if the DVD is hotswapped in place of a battery, or if the laptop is suspended and resumed. This DMA-related phenomenon is explained more on the [[UltraBay]] page in the Hotswapping section.

==Upgrading from 2005 LE to 2006==
Although the installer ran without incident, look out for several issues to address:

* Several things quit working until I switched to the 2.6.11 kernel that was installed. Notably, sound didn't work and the trackpointer didn't work. You can use drakboot to change the default corner, or command line jockeys can edit {{path|/etc/lilo.conf}}

* The DVD drive could not be located. It was being sought at {{path|/mnt/cdrom}} but really existed at {{path|/mnt/cdrom2}}. Rebooting seemed to fix this.

* My Orinico wireless card quit working. It was being recognized at "eth0" now instead of "eth1". Copying my settings from the eth1 configuration to the eth0 configuration fixed that.

* Using the TrackPoint in combination with the middle mouse button as a scroll wheel quit working. I got it working by using this bit in my {{path|/etc/X11/xorg.conf}} file.

Section "InputDevice"
Identifier "Mouse1"
Driver "mouse"
Option "Protocol" "ExplorerPS/2"
Option "Device" "/dev/mouse"
Option "Emulate3Buttons" "true"
Option "XAxisMapping" "4 5"
Option "YAxisMapping" "6 7"
Option "EmulateWheel" "true"
Option "EmulateWheelButton" "2"
EndSection

If you haven't editted this file before, select "Run" from the start menu and then run a text editor (such as "kate") as root. Be sure to create an extra copy of the file before you change it in case there is a problem!
To make the changes take effect you'll need to restart X. Rebooting is one way to do that, or you could hold Control-Alt-Backspace to restart the X server.

* The "Suspend" option had disappeared from the KLaptop menu. It was necessary to go into the "Configure KLaptop" dialog and re-setup the "helper applications".

* Selecting "ondemand" as a Performance Profile seems to have no effect, through KLaptop or on the command line. It would be nice to solve this for better life.

* While suspending worked great with Mandriva LE, trying to suspend with APM, now resulted in a reboot upon resuming. What finally worked me was:
** Upgraded to 2.6.12 kernel (not sure if this mattered)
** Make sure acpi and acpid are installed and apmd is not
** Use the built-in suspend key to suspend (Fn-F4). (Using KLaptop instead resulted in no sound upon resume).

* My USB card reader quit working. My fix was to make sure the USB service was started at boot time, and to explicitly load the USB mass storage module at boot time.
**{{cmdroot|ln -s /etc/init.d/usb /etc/rc5.d/S50usb}}
**Edit {{path|/etc/sysconfig/usb}} and set <tt>STORAGE=yes</tt>

==Getting the modem to work==
The modem is not accessable through one of the default serial interfaces. It can, however, be queried through {{path|/dev/tty13}}.

For further information, see [[Installing_Ltmodem_driver_for_Mandriva]].

=Mandriva 2005 LE=

==Suspend/Resume==

Mandriva controls suspend/resume preferences through the file {{path|/etc/sysconfig/suspend}}.
It is a well-commented text file. Here are two options I set that seemed to help make sound
continue working after a suspend on the T20:

RESTORE_SOUND="yes"
SOUND_MODULES="sb uart401 sound soundcore maestro cs4281 snd-cs46xx"

I'm not sure if all the sound modules in this list are necessary. I added <tt>snd-cs46xx</tt> to the list
because I knew it was the one I was using.

From the Mandrake Control Center, I configured one specific Thinkpad-specific option for the sound
driver. I entered the "Hardware" area and then selected the sound card and clicked "Configure Module".
One of the options is labeled simply "thinkpad". I set it to "1".

===Screen Locking after Suspend===

My screen always came back locked after I suspended, and I couldn't figure out how to turn that off
at first. That preference is also in {{path|/etc/sysconfig/suspend}} and is named LOCK_XFREE.

I set it to "no", but can still lock the screen if I want by using the Klaptop "Lock & Suspend..." option

==External Sources==

*[http://mr.uue.org/gnulinux/t20/ Michael Reinsch's notes about Mandriva on a Thinkpad T20]
*[http://pmag.chez.tiscali.fr/mdk80ontpt20.html How to Install a Mandrake 8.0 on a IBM Thinkpad T20]

[[Category:Mandriva]] [[Category:T20]]