AD1981HD

2006-08-16T22:41:23Z

Anantsahai: /* Linux ALSA driver */

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=== AD1981HD ===
This is a Analog Devices High-Definition Audio 1.0 controller

=== Features ===
* Chipset: AD1981HD
* Interface: HD Audio 1.0
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=== Linux OSS driver ===
??

=== Linux ALSA driver ===
This chip works with '''snd-hda-intel''' driver. Possible cracking noises can be avoided by adding the
position_fix=2 optional argument for the module.
* The AD1981HD installs by default in Debian. To get it to work you must first install it with alsaconf.
* As of kernel 2.6.17, some users report a missing master volume control (e.g., with the T60p), as described in this thread: http://www.mail-archive.com/alsa-user@lists.sourceforge.net/msg17089.html The "Front" channel, which controls the external speakers, can act as a master, but must be unmuted for headphones to work. However, with the "Front" volume all the way down, the headphones will be very quiet, and audible sound may still emerge from the speakers.

{{ NOTE | The modem and audio chip are very closely connected somehow. According to a bug in the BIOS,
the modem disables the audio device, too. That seems to be the reason for most sound problem with this chip.}}

Oddly enough, in Fedora Core 5 on an x60s, the recording function seems to work fine (if you select the "Front Mic" as the capture device in alsamixer) in both Audacity and skype, while not working in ALSA's own arecord! Users are advised to try audacity before concluding that recording is not functioning correctly.

=== ThinkPads this chip may be found in ===
* {{T60}}, {{T60p}}
* {{X60}}, {{X60s}}
* {{Z60m}}, {{Z60t}}

=== Datasheets ===
* [http://www.analog.com/en/prod/0,2877,AD1981HD,00.html Analog Devices page for the AD1981HD]
* [http://www.analog.com/UploadedFiles/Data_Sheets/338118709AD1981HD_0.pdf Direct link to the AD1981HD datasheet]

[[Category:Components]]

Intel Graphics Media Accelerator 950

2006-08-16T17:47:14Z

Anantsahai: /* Linux Intel driver */

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=== Intel Graphics Media Accelerator 950 ===
This is an Intel video adapter

=== Features ===
* Integrated into the following chipsets:
** [[Intel 945GM]]
* PCI ID: 8086:????
* Uses up to 224MB of main memory for video usage
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=== Linux X.Org driver ===
Supported by Xorg.

=== Linux Intel driver ===
There is a Graphics driver for the Mobile IntelÂ® 945GM Express Chipset Family at [http://downloadfinder.intel.com/scripts-df-external/filter_results.aspx?strTypes=all&ProductID=2301&OSFullName=Linux*&lang=eng&strOSs=39&submit=Go%21 Intels Support Site]. This driver is just a snapshot of the Xorg/XFree86 driver.

In my case, the i810 driver recommended by multiple sources for this graphics card did not work, leaving a message of "No device found." Running against the generic vesa drivers solves that problem, but does not allow use of the external VGA port.

In Fedora Core 5 at least, the correct i810 driver can be obtained from the updates (in updates-testing as of Aug 15, 2006). With that, the i810 driver seems to work.

==== ThinkPad LCD ====
Display on the internal LCD works as long as you set the monitor settings correct.

==== External VGA port ====
Works. Dualhead is supported.

There are two options for running the external VGA port - either as a copy of the LCD (clone) or as a separate workspace. Here is an example for the separate workspace mode for xorg.conf for the X60s:
Section "Device"
Identifier "Intel Corporation Mobile Integrated Graphics Controller"
Driver "i810"
BusID "PCI:0:2:0"
Option "MonitorLayout" "CRT,LFP"
Option "DevicePresence" "true"
Screen 1
EndSection
Section "Device"
Identifier "Intel Corporation Mobile Integrated Graphics Controller External CRT"
Driver "i810"
BusID "PCI:0:2:0"
Screen 0
EndSection
Section "Monitor"
Identifier "LCD"
Option "DPMS"
EndSection

Section "Monitor"
Identifier "External CRT"
Option "DPMS"
HorizSync 28-75
VertRefresh 43-100
EndSection

Section "Screen"
Identifier "External Screen"
Device "Intel Corporation Mobile Integrated Graphics Controller External CRT"
Monitor "External CRT"
DefaultDepth 24
SubSection "Display"
Depth 24
Modes "1280x1024"
EndSubSection
EndSection

Section "Screen"
Identifier "Default Screen"
Device "Intel Corporation Mobile Integrated Graphics Controller"
Monitor "LCD"
DefaultDepth 24
SubSection "Display"
Depth 1
Modes "1024x768"
EndSubSection
EndSection

Section "ServerLayout"
Identifier "Default Layout"
Screen 0 "Default Screen" 0 0
Screen 1 "External Screen" RightOf "Default Screen"
InputDevice "Generic Keyboard"
InputDevice "Configured Mouse"
InputDevice "stylus" "SendCoreEvents"
InputDevice "cursor" "SendCoreEvents"
InputDevice "eraser" "SendCoreEvents"
InputDevice "Synaptics Touchpad"
EndSection

Here is the relevant text for running the VGA port as a true clone (so even things like Xine video playback appears on both screens) of the internal LCD display:

Section "Device"
Identifier "Videocard0"
Driver "i810"
BusID "PCI:0:2:0"
Option "MonitorLayout" "NONE,LFP+CRT"
Option "DevicePresence" "true"
Option "CheckLid" "false"
VendorName "Lenovo"
BoardName "Intel Corporation Mobile Integrated Graphics Controller"
EndSection

==== SVideo port ====
??

==== DVI port ====
DVI passthrough is only supported on the T60.

Linux support status is unknown

==== Suspend behaviour ====
* Required kernel parameters for suspend to ram: none
* Additional notes:
** switch to/from X11 to reinitialize display properly (stays black)
** DO NOT use vbetool to save/restore the video mode, this breakes resume!

=== ThinkPads this chip may be found in ===
* {{T60}}
* {{X60}}, {{X60s}}

[[Category:Components]]

ThinkWiki - User contributions [en]

AD1981HD

Intel Graphics Media Accelerator 950