Installing Fedora 12 on a ThinkPad T41

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Revision as of 16:52, 17 November 2009 by Tonko (Talk | contribs) (F12 is final)
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Success Chart - Out of the box experience

This machines SMOLT profile is available here.

Item Working Notes
Installation Local CD/DVD install yes
Network Installation yes
USB Installation yes
Display Laptop Screen yes Occasional minor corruption. Compiz works, but rotating cube causes the colour palette to be messed up during rotation.
VGA partial see below
DVI partial see below. Requires port-replicator or dock with DVI
S-Video partial see below
Power Management Software Suspend (hibernate) yes
Suspend to Memory (ACPI sleep) no Broken. corrupted display on resume. can switch to text mode. [1]
Audio yes crackling on startup, afterwards seems to work fine
Wireless WiFi - Atheros AR5212 yes See below - There are some issues with range.
WiFi - Intel unknown (should work)
Bluetooth yes
Input Keyboard yes
TrackPoint yes Install gpointing-device-settings rpm for full configuration capabilities
TouchPad yes Install gpointing-device-settings rpm for full configuration capabilities
Extra keys partial see ThinkPad Extra keys section below
Ports Ethernet yes
Modem no Requires closed-source driver. Install the slmodem rpm from the rpmfusion-nonfree repository, edit /etc/sysconfig/slmodem and set INTERFACE=ALSA and ALSA_DEVICE=hw:1,0 and optionally the country.
Serial yes Requires port-replicator or dock
IrDA no Device is detected, but does not work
PS/2 Keyboard/Mouse yes Mouse works, but disables Trackpoint/Touchpad
Parallel unknown (should work) Device is detected
USB yes
PCMCIA/Cardbus yes
Harddisk Active Protection partial There is now a hdapsd rpm, but it is not installed by default, and neither is the hdaps kernel module getting automatically loaded. And even after install it is not started automatically. Starting it manually (modprobe hdaps; hdapsd -d sda), does seem to cause the HDD heads to get parked, but it gives lots of warnings that seem to indicate it does not yet work as intended.
Ultrabay device removal partial Eject switch causes udev event, but no default udev script to handle the event to unmount filesystems in time. ata_piix does handle the removal and insertion of ATA devices.
TPM (security subsystem) unknown Not brave enough to mess around with it. You can try to install the tpm-tools rpm.
Dock removal unknown Most likely not handled either

Tested and Verified on Fedora 12

Information in this section has been tested and verified using Fedora 12.

Installation

Installation is straight forward; you can follow the generic Fedora install instructions.

Configuration

Kernel

It is recommended to edit /boot/grub/grub.conf and add hpet=force to the kernel line. This will activate HPET (High Precision Event Timer), which will allow the CPU to sleep for longer periods and save power.

X Server - ATI RV250

Basic X server functionality should work after upgrading to the 2.6.31.5-105 kernel on the ThinkPad LCD (LVDS), and any hot-plugged displays (after the X server is already running).

Booting with an external display attached does not work properly. Plymouth Graphical boot works fine, but the moment the X server starts to display GDM the LVDS gets switched off and the picture on the external display is somewhat messed up (on partly re-drawn). Logging in causes the X server to crash and restart.

Attaching an external display after the X server is started (hotplug) works better. After you manually trigger a display scan (for instance running xrandr or pressing the 'Detect Monitors' button in Gnome Display Properties) will cause extended desktop mode to get activated. You can also switch to mirror mode, and use the Fn-F5 key combination to switch between different modes.

TV-Out (S-Video) defaults to NTSC and cannot be changed to anything else. No settings are available to adjust the output. Also the picture has a very annoying horizontal 'vibration' making it useless.

In addition the following issues exist

  • unknown physical LVDS display size (0mm x 0mm)
  • nasty LVDS 'flash' when hotplugging an external display and running xrandr
  • external displays do not show the physical size, until you run xrandr for the 2nd time [[2]]
  • external ONLY does not work (both displays are black)
  • when an external display is attached, the shutdown/reboot plymouth screen on the LVDS will do a strange fade to white, like the screen is going
  • Starting tuxkart, also causes the LVDS display to fade to white like it is burning out.

Enabling 'Desktop Effects' (compiz) works. But there is a colour palette problem when using the cube rotation.

WiFi

Both the Intel and Atheros AR5212 wireless should work out of the box.

I did limited tested with Atheros and it seemed to worked as long as your not too far from your WiFi AP/Router. The further away you are the more problems, ranging from several tries before it connects, to never connecting even though it reports 2 out of 4 bars in signal strength. Once connected you can move further away and keep connected, at least until it needs to re-negotiate at which time you loose your connection.

Intel WiFi was not tested.

ThinkPad Extra keys

ThinkPad keys are handled by a mixture of the thinkpad_acpi, acpi button and acpi dock drivers.

Key Function Handled by Event Works Notes
Fn-F3 lock screen thinkpad_acpi HAL yes
Fn-F4 suspend acpi button HAL partial button works, but suspend fails on resume with corrupted display
Fn-F5 wireless thinkpad_acpi HAL partial Works as a radio kill switch, kills WiFi but not Bluetooth
Fn-F7 videomode thinkpad_acpi HAL yes Cycles through various modes (LVDS+External Extended, LVDS+External Mirror, LVDS only, External only).
Fn-F12 hibernate acpi button HAL yes
Fn-Home brightness up - no yes no default OSD. Install the tpb rpm as a workaround.
Fn-End brightness down - no yes no default OSD. Install the tpb rpm as a workaround.
Fn-PgUp thinklight - no yes no default OSD. Install the tpb rpm as a workaround.
Fn-Space zoom thinkpad_acpi HAL no Known Xorg limitation, scheduled to be fixed in Xorg 1.8 with the new XKB2 extension in 2Q 2010
VolumeUp Volume Up - no yes no default OSD. Install the tpb rpm as a workaround.
VolumeDown Volume Down - no yes no default OSD. Install the tpb rpm as a workaround.
Mute Mute - no yes no default OSD. Install the tpb rpm as a workaround.
Access IBM Vendor key thinkpad_acpi HAL partial No default action, but can be associated with gnome-keybinding-properties
NextTab Browser Next tab standard keyboard driver HAL yes
PreviousTab Browser Previous tab standard keyboard driver HAL yes
Power Power button acpi button HAL yes Need to press button for ~1 second to trigger event. Causes a dialog asking you what to do.
Lid Lid button acpi button HAL yes
Dock Dock eject button acpi dock unknown unknown Should cause udev event
Ultrabay Ultrabay eject switch acpi dock udev no Causes udev event, but missing handler. See below.

Ultrabay

Ultrabay eject is not handled properly by default. Since there is no undock udev handler. This udev rule and eject script works for me: How to hotswap Ultrabay devices

IrDA

IrDA is detected, but does not work. Part of the problem is that the default Fedora configuration expects to find the IrDA port at /dev/ttyS2, while it should use /dev/ircomm0 instead. This can be fixed in /etc/sysconfig/irda after which the irda service can be started (# service irda start).

However, even after this communication with other devices fails. irdadump does not show any output when something like a mobile phone with IrDA is sending data.

Untested on Fedora 12

Dock eject was not tested, as I only have a port replicator not a dock.