I installed Ubuntu 8.10 on a ThinkPad X61 model 7673-CTO.

Information about this model

Some available accessories for this model

40Y8116 UltraBase X6
41N5643 Ultrabay Slim Multi-Burner III Drive
40Y6789 3-cell UltraBase battery
40Y7003 ThinkPad X60 series 8-cell High-Capacity Battery
40Y7696 ThinkPad and IdeaPad 65W AC Adapter

DMI info for this model

# dmidecode -s system-manufacturer
LENOVO
# dmidecode -s system-product-name
7673CTO
# dmidecode -s system-version
ThinkPad X61

glxgears

$ glxgears
3655 frames in 5.0 seconds = 730.939 FPS

Issues

HDAPS

Can't load the `hdaps` module

# modprobe hdaps
FATAL: Error inserting hdaps (/lib/modules/2.6.27-11-generic/kernel/drivers/hwmon/hdaps.ko): No such device or address
# rmmod thinkpad_ec
# modprobe hdaps
#

The hdaps and the thinkpad_ec module conflict. Either one can be loaded in the absence of the other.

Apparently an hdaps_ec module is needed but Ubuntu doesn't currently (4 March 2009) ship it. Reported: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/297213

The hdaps module loaded:

Setting up hdapsd (1:0.0.20070803-2) ...
 * Not starting hdapsd: /sys/block/hda/queue/protect does not exist,
 please read /usr/share/doc/hdapsd/README.Debian

The latter file says:

hdapsd needs the hdaps kernel module and the hdaps_protect patch
in the kernel so it WON'T work out-of-the-box on a Debian machine yet.
Look at http://thinkwiki.org/wiki/HDAPS for additional information.

Bold text

Docking

/proc/acpi/ibm/bay

There is a /proc/acpi/ibm/bay file with the following contents:

The X61 is docked in the UltraBase X6 with a Ultrabay Slim Multi-Burner III Drive in the Ultrabay Slim port.

# cat bay
status:         occupied
commands:       eject

No /proc/acpi/ibm/dock

The file /proc/acpi/ibm/dock does not exist even though the thinkpad-acpi module is loaded and the X61 is booted while docked in the UltraBase X6. So, instructions in the thinkpad-acpi README and elsewhere that make reference to this file can be followed.

lsmod reveals that the dock and bay modules are loaded. There is a /sys/devices/platform/dock.0 directory with:

# cd /sys/devices/platform/dock.0
# ls -al
total 0
drwxr-xr-x  3 root root    0 2009-03-01 17:22 .
drwxr-xr-x 13 root root    0 2009-03-01 17:22 ..
-r--r--r--  1 root root 4096 2009-03-01 17:22 docked
-r--r--r--  1 root root 4096 2009-03-01 17:28 flags
-r--r--r--  1 root root 4096 2009-03-01 17:28 modalias
drwxr-xr-x  2 root root    0 2009-03-01 17:28 power
lrwxrwxrwx  1 root root    0 2009-03-01 17:22 subsystem -> ../../../bus/platform
-rw-r--r--  1 root root 4096 2009-03-01 17:22 uevent
-r--r--r--  1 root root 4096 2009-03-01 17:28 uid
--w-------  1 root root 4096 2009-03-01 17:28 undock

When not docked:

# cat /sys/devices/platform/dock.0/docked
0

When docked:

# cat /sys/devices/platform/dock.0/docked
1

Hard freeze on undock from UltraBase

The ThinkPad X61 can be docked in the UltraBase X6 which has an Ultrabay Slim into which an optical drive can be installed such as the Ultrabay Slim Multi-Burner III Drive.

If the X61 is removed from the UltraBase then it seizes up, presumably because the kernel can no longer see the optical drive.

A sufficient solution is to "delete" the optical drive before undocking.

echo 1 >  /sys/class/scsi_device/1:0:0:0/device/delete

It doesn't seem to be necessary to write to /sys/bus/platform/devices/dock.0/undock as some suggest.

After reattaching the UltraBase, do

echo 0 0 0 > /sys/class/scsi_host/host1/scan

to cause the optical drive to be noticed by the kernel.

Note that it is possible that the device number be something other than 1:0:0:0. Do, e.g.,

ls -l /sys/class/scsi_device/*:0:0:0/device/delete

to check.

Refs:

Do something on undock and dock

Add an /etc/udev/rules.d/55-thinkpad-local.rules file containing:

KERNEL=="dock.0", ATTR{docked}=="1", RUN+="/etc/thinkpad/dock.sh 1"
KERNEL=="dock.0", ATTR{docked}=="0", RUN+="/etc/thinkpad/dock.sh 0"

and add an /etc/thinkpad/dock.sh file containing something like this:

#!/bin/sh
DOCKED=$(cat /sys/devices/platform/dock.0/docked)
echo Docked: $DOCKED | logger -t $0
case "$DOCKED" in
        "0")
                # Do something
                ;;
        "1")
                # Do something else
                ;;
esac

Here is the content of /var/log/syslog during this sequence of actions:

Press the "undock" button on the left side of the UltraBase X6
Remove the X61 from the UltraBase X6
Insert the X61 back into the UltraBase X6 with various peripherals attached

-- Pressed the undock button here --

Mar  5 12:56:02 triffid kernel: [31768.846089] ACPI: \_SB_.GDCK - undocking
Mar  5 12:56:02 triffid kernel: [31768.850304] usb 2-4: USB disconnect, address 8
Mar  5 12:56:02 triffid kernel: [31768.850311] usb 2-4.1: USB disconnect, address 9
Mar  5 12:56:03 triffid kernel: [31768.917622] usb 2-4.2: USB disconnect, address 10
Mar  5 12:56:03 triffid /etc/thinkpad/dock.sh: Docked: 0

-- Removed X61 from UltraBase X6 here --

Mar  5 12:56:40 triffid kernel: [31806.417127] 0000:00:19.0: eth0: Link is Down
Mar  5 12:56:40 triffid NetworkManager: <info>  (eth0): carrier now OFF (device state 8) 
Mar  5 12:56:40 triffid NetworkManager: <info>  (eth0): device state change: 8 -> 2 
Mar  5 12:56:40 triffid NetworkManager: <info>  (eth0): deactivating device (reason: 40). 
Mar  5 12:56:40 triffid NetworkManager: <info>  eth0: canceled DHCP transaction, dhcp client pid 25911 
Mar  5 12:56:40 triffid NetworkManager: <info>  Policy set 'Auto bb55-lubbers' (wlan0) as default for routing and DNS. 
Mar  5 12:56:40 triffid avahi-daemon[3772]: Withdrawing address record for 192.168.1.35 on eth0.
Mar  5 12:56:40 triffid avahi-daemon[3772]: Leaving mDNS multicast group on interface eth0.IPv4 with address 192.168.1.35.
Mar  5 12:56:40 triffid avahi-daemon[3772]: Interface eth0.IPv4 no longer relevant for mDNS.
Mar  5 12:56:40 triffid x-session-manager[13353]: DEBUG(+): GsmDBusClient: obj_path=/org/freedesktop/PowerManagement interface=org.freedesktop.PowerManagement method=OnBatteryChanged 
Mar  5 12:56:40 triffid x-session-manager[13353]: DEBUG(+): GsmDBusClient: obj_path=/org/freedesktop/PowerManagement interface=org.freedesktop.PowerManagement method=PowerSaveStatusChanged 
Mar  5 12:56:42 triffid pulseaudio[13457]: module-alsa-sink.c: Increasing wakeup watermark to 90.00 ms
Mar  5 12:56:44 triffid pulseaudio[13457]: module-alsa-sink.c: Increasing wakeup watermark to 100.00 ms

-- Inserted the X61 into the UltraBase X6 here --

Mar  5 12:57:02 triffid anacron[26310]: Anacron 2.3 started on 2009-03-05
Mar  5 12:57:02 triffid anacron[26310]: Normal exit (0 jobs run)
Mar  5 12:57:02 triffid anacron[26369]: Anacron 2.3 started on 2009-03-05
Mar  5 12:57:02 triffid anacron[26369]: Normal exit (0 jobs run)
Mar  5 12:57:02 triffid x-session-manager[13353]: DEBUG(+): GsmDBusClient: obj_path=/org/freedesktop/PowerManagement interface=org.freedesktop.PowerManagement method=OnBatteryChanged 
Mar  5 12:57:02 triffid x-session-manager[13353]: DEBUG(+): GsmDBusClient: obj_path=/org/freedesktop/PowerManagement interface=org.freedesktop.PowerManagement method=PowerSaveStatusChanged 
Mar  5 12:57:02 triffid kernel: [31828.384758] ACPI: \_SB_.GDCK - docking
Mar  5 12:57:02 triffid kernel: [31828.589049] usb 2-4: new high speed USB device using ehci_hcd and address 11
Mar  5 12:57:02 triffid kernel: [31828.721419] usb 2-4: configuration #1 chosen from 1 choice
Mar  5 12:57:02 triffid kernel: [31828.722409] hub 2-4:1.0: USB hub found
Mar  5 12:57:02 triffid kernel: [31828.722465] hub 2-4:1.0: 4 ports detected
Mar  5 12:57:03 triffid kernel: [31829.232108] usb 2-4.1: new low speed USB device using ehci_hcd and address 12
Mar  5 12:57:03 triffid kernel: [31829.364574] usb 2-4.1: configuration #1 chosen from 1 choice
Mar  5 12:57:03 triffid kernel: [31829.373005] input: Microsoft Comfort Curve Keyboard 2000 as /devices/pci0000:00/0000:00:1a.7/usb2/2-4/2-4.1/2-4.1:1.0/input/input18
Mar  5 12:57:03 triffid kernel: [31829.412125] generic-usb 0003:045E:00DD.000A: input,hidraw0: USB HID v1.11 Keyboard [Microsoft Comfort Curve Keyboard 2000] on usb-0000:00:1a.7-4.1/input0
Mar  5 12:57:03 triffid kernel: [31829.424150] input: Microsoft Comfort Curve Keyboard 2000 as /devices/pci0000:00/0000:00:1a.7/usb2/2-4/2-4.1/2-4.1:1.1/input/input19
Mar  5 12:57:03 triffid kernel: [31829.456127] generic-usb 0003:045E:00DD.000B: input,hidraw1: USB HID v1.11 Device [Microsoft Comfort Curve Keyboard 2000] on usb-0000:00:1a.7-4.1/input1
Mar  5 12:57:03 triffid NetworkManager: <info>  (eth0): carrier now ON (device state 2) 
Mar  5 12:57:03 triffid NetworkManager: <info>  (eth0): device state change: 2 -> 3 
Mar  5 12:57:03 triffid NetworkManager: <info>  Activation (eth0) starting connection 'Auto eth0' 
Mar  5 12:57:03 triffid NetworkManager: <info>  (eth0): device state change: 3 -> 4 
Mar  5 12:57:03 triffid NetworkManager: <info>  Activation (eth0) Stage 1 of 5 (Device Prepare) scheduled... 
Mar  5 12:57:03 triffid NetworkManager: <info>  Activation (eth0) Stage 1 of 5 (Device Prepare) started... 
Mar  5 12:57:03 triffid NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) scheduled... 
Mar  5 12:57:03 triffid NetworkManager: <info>  Activation (eth0) Stage 1 of 5 (Device Prepare) complete. 
Mar  5 12:57:03 triffid NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) starting... 
Mar  5 12:57:03 triffid NetworkManager: <info>  (eth0): device state change: 4 -> 5 
Mar  5 12:57:03 triffid NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) successful. 
Mar  5 12:57:03 triffid kernel: [31829.507200] 0000:00:19.0: eth0: Link is Up 1000 Mbps Full Duplex, Flow Control: RX/TX
Mar  5 12:57:03 triffid NetworkManager: <info>  Activation (eth0) Stage 3 of 5 (IP Configure Start) scheduled. 
Mar  5 12:57:03 triffid NetworkManager: <info>  Activation (eth0) Stage 2 of 5 (Device Configure) complete. 
Mar  5 12:57:03 triffid NetworkManager: <info>  Activation (eth0) Stage 3 of 5 (IP Configure Start) started... 
Mar  5 12:57:03 triffid NetworkManager: <info>  (eth0): device state change: 5 -> 7 
Mar  5 12:57:03 triffid NetworkManager: <info>  Activation (eth0) Beginning DHCP transaction. 
Mar  5 12:57:03 triffid dhclient: Internet Systems Consortium DHCP Client V3.1.1
Mar  5 12:57:03 triffid dhclient: Copyright 2004-2008 Internet Systems Consortium.
Mar  5 12:57:03 triffid dhclient: All rights reserved.
Mar  5 12:57:03 triffid dhclient: For info, please visit http://www.isc.org/sw/dhcp/
Mar  5 12:57:03 triffid dhclient: 
Mar  5 12:57:03 triffid dhclient: wmaster0: unknown hardware address type 801
Mar  5 12:57:03 triffid NetworkManager: <info>  dhclient started with pid 26444 
Mar  5 12:57:03 triffid NetworkManager: <info>  Activation (eth0) Stage 3 of 5 (IP Configure Start) complete. 
Mar  5 12:57:03 triffid NetworkManager: <info>  DHCP: device eth0 state changed normal exit -> preinit 
Mar  5 12:57:03 triffid dhclient: wmaster0: unknown hardware address type 801
Mar  5 12:57:03 triffid dhclient: Listening on LPF/eth0/00:1d:72:96:e4:31
Mar  5 12:57:03 triffid dhclient: Sending on   LPF/eth0/00:1d:72:96:e4:31
Mar  5 12:57:03 triffid dhclient: Sending on   Socket/fallback
Mar  5 12:57:03 triffid kernel: [31829.540257] usb 2-4.2: new low speed USB device using ehci_hcd and address 13
Mar  5 12:57:03 triffid kernel: [31829.643955] usb 2-4.2: configuration #1 chosen from 1 choice
Mar  5 12:57:03 triffid kernel: [31829.654901] input: Logitech USB-PS/2 Optical Mouse as /devices/pci0000:00/0000:00:1a.7/usb2/2-4/2-4.2/2-4.2:1.0/input/input20
Mar  5 12:57:03 triffid kernel: [31829.685098] generic-usb 0003:046D:C00E.000C: input,hidraw2: USB HID v1.10 Mouse [Logitech USB-PS/2 Optical Mouse] on usb-0000:00:1a.7-4.2/input0
Mar  5 12:57:04 triffid /etc/thinkpad/dock.sh: Docked: 1
Mar  5 12:57:07 triffid dhclient: DHCPDISCOVER on eth0 to 255.255.255.255 port 67 interval 3
Mar  5 12:57:07 triffid dhclient: DHCPOFFER of 192.168.1.35 from 192.168.1.254
Mar  5 12:57:07 triffid dhclient: DHCPREQUEST of 192.168.1.35 on eth0 to 255.255.255.255 port 67
Mar  5 12:57:07 triffid dhclient: DHCPACK of 192.168.1.35 from 192.168.1.254
Mar  5 12:57:07 triffid NetworkManager: <info>  DHCP: device eth0 state changed preinit -> bound 
Mar  5 12:57:07 triffid NetworkManager: <info>  Activation (eth0) Stage 4 of 5 (IP Configure Get) scheduled... 
Mar  5 12:57:07 triffid NetworkManager: <info>  Activation (eth0) Stage 4 of 5 (IP Configure Get) started... 
Mar  5 12:57:07 triffid NetworkManager: <info>    address 192.168.1.35 
Mar  5 12:57:07 triffid NetworkManager: <info>    prefix 24 (255.255.255.0) 
Mar  5 12:57:07 triffid NetworkManager: <info>    gateway 192.168.1.254 
Mar  5 12:57:07 triffid NetworkManager: <info>    hostname 'dhcppc2' 
Mar  5 12:57:07 triffid NetworkManager: <info>    nameserver '192.168.1.254' 
Mar  5 12:57:07 triffid NetworkManager: <info>    domain name 'lokaal' 
Mar  5 12:57:07 triffid NetworkManager: <info>  Activation (eth0) Stage 5 of 5 (IP Configure Commit) scheduled... 
Mar  5 12:57:07 triffid NetworkManager: <info>  Activation (eth0) Stage 4 of 5 (IP Configure Get) complete. 
Mar  5 12:57:07 triffid NetworkManager: <info>  Activation (eth0) Stage 5 of 5 (IP Configure Commit) started... 
Mar  5 12:57:07 triffid avahi-daemon[3772]: Joining mDNS multicast group on interface eth0.IPv4 with address 192.168.1.35.
Mar  5 12:57:07 triffid avahi-daemon[3772]: New relevant interface eth0.IPv4 for mDNS.
Mar  5 12:57:07 triffid avahi-daemon[3772]: Registering new address record for 192.168.1.35 on eth0.IPv4.
Mar  5 12:57:07 triffid dhclient: bound to 192.168.1.35 -- renewal in 13934 seconds.
Mar  5 12:57:08 triffid NetworkManager: nm_ip4_config_add_nameserver: assertion `nameserver != s' failed
Mar  5 12:57:08 triffid NetworkManager: nm_ip4_config_add_nameserver: assertion `nameserver != s' failed
Mar  5 12:57:08 triffid NetworkManager: <info>  Policy set 'Auto bb55-lubbers' (wlan0) as default for routing and DNS. 
Mar  5 12:57:08 triffid NetworkManager: <info>  (eth0): device state change: 7 -> 8 
Mar  5 12:57:08 triffid NetworkManager: nm_ip4_config_add_nameserver: assertion `nameserver != s' failed
Mar  5 12:57:08 triffid NetworkManager: <info>  Policy set 'Auto eth0' (eth0) as default for routing and DNS. 
Mar  5 12:57:08 triffid NetworkManager: <info>  Activation (eth0) successful, device activated. 
Mar  5 12:57:08 triffid NetworkManager: <info>  Activation (eth0) Stage 5 of 5 (IP Configure Commit) complete. 
Mar  5 12:57:08 triffid ntpdate[26538]: adjust time server 91.189.94.4 offset 0.018127 sec

Ref: http://marc.info/?l=linux-thinkpad&m=123416226107039&w=2

Keys

ThinkVantage key not seen by X

The ThinkVantage key is seen and reported by ACPI.

$ acpi_listen
ibm/hotkey HKEY 00000080 00001018

It is seen and reported by input-events as KEY_VENDOR which according to /usr/include/linux/input.h has the value 0x168.

It is seen by showkey as having keycode 0x168 (360 in decimal).

But it isn't seen by xev.

This is confirmed fixed in Jaunty.

Refs:

Fn-F5 emits KEY_RADIO instead of KEY_WLAN

Reported here: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=504643

Table of keycodes for special keys and key combinations

While investigating the above problem I researched what key codes the various special keys and key combinations generate on this ThinkPad using various tools. The observations (which haven't been double-checked yet) are summarized in the following table.

key combination	extra function symbol	`showkey` keycode	`input-events`	`acpi_listen`	`xev`	GNOME keyboard shortcuts
⟦◁̸ (loudspeaker icon with stroke)		113	(none)	(none)	121	XF86AudioMute
⟦◁▾ (loudspeaker icon, down arrow)		114	(none)	(none)	122	XF86AudioLowerVolume
⟦◁▴ (loudspeaker icon, up arrow)		115	(none)	(none)	123	XF86AudioRaiseVolume
ThinkVantage		360	KEY_VENDOR	ibm/hotkey HKEY 00000080 00001018	(none)	(none)
Fn		143		(none)	151	XF86WakeUp
Fn-F1		466	KEY_FN_F1	ibm/hotkey HKEY 00000080 00001001	(none)	(none)
Fn-F2	padlock	152	KEY_SCREENLOCK	ibm/hotkey HKEY 00000080 00001002	(none)	XF86ScreenSaver
Fn-F3	battery	236	KEY_BATTERY	ibm/hotkey HKEY 00000080 00001003	(none)	(none)
Fn-F4	crescent moon	142; 142	KEY_SLEEP	ibm/hotkey HKEY 00000080 00001004	(none)	XF86Sleep
Fn-F5	radiating computer	385	KEY_RADIO	ibm/hotkey HKEY 00000080 00001005	(none)	(none)
Fn-F6		471	KEY_FN_F6	ibm/hotkey HKEY 00000080 00001006	(none)	(none)
Fn-F7	screen, line, computer	227	KEY_SWITCHVIDEOMODE	ibm/hotkey HKEY 00000080 00001007	(none)	(none)
Fn-F8	trackpoint, line, trackpad	192	KEY_F22	ibm/hotkey HKEY 00000080 00001008	(none)	(none)
Fn-F9	computer, eject symbol	194	KEY_F24	ibm/hotkey HKEY 00000080 00001009	(none)	(none)
Fn-F10		143	(none)	(none)	(none)	XF86WakeUp
Fn-F11		476	KEY_FN_F11	ibm/hotkey HKEY 00000080 0000100b	(none)	(none)
Fn-F12	screen, arrow, diskpack	205	KEY_SUSPEND	ibm/hotkey HKEY 00000080 0000100c	(none)	(none)
Fn-Home	sun, up arrow	225; 225	KEY_BRIGHTNESSUP	ibm/hotkey HKEY 00000080 00001010, video LCD0 00000086 00000000	(none)	XF86MonBrightnessUp
Fn-End	sun, down arrow	224; 224	KEY_BRIGHTNESSDOWN	ibm/hotkey HKEY 00000080 00001011, video LCD0 00000087 00000000	(none)	XF86MonBrightnessDown
Fn-PgUp	illuminated lamp	(none)	(none)	(none)	(none)
Fn-Space	screen with hourglass ("zoom" symbol)	372	KEY_ZOOM	ibm/hotkey HKEY 00000080 00001014	(none)	(none)
Fn-→	barred right arrowhead ("next" symbol)	163	(none)	(none)	171	XF86AudioNext
Fn-↓	right arrowhead ("play" symbol)	164	(none)	(none)	172	XF86AudioPlay
Fn-←	barred left arrowhead ("prev" symbol)	165	(none)	(none)	173	XF86AudioPrev
Fn-↑	square ("stop play" symbol)	166	(none)	(none)	174	XF86AudioStop
◂⎗ (left arrowhead, page icon)		158	(none)	(none)	166	XF86Back
⎘▸ (page icon, right arrowhead)		159	(none)	(none)	167	XF86Forward

Hotkey mask when the above table was compiled:

$ cat /sys/devices/platform/thinkpad_acpi/hotkey_mask
0x00fdffff
$ cat /sys/devices/platform/thinkpad_acpi/hotkey_all_mask
0x00ffffff
$ cat /sys/devices/platform/thinkpad_acpi/hotkey_recommended_mask
0x008c7fff
$ cat /sys/devices/platform/thinkpad_acpi/hotkey_report_mode
1

Compare Default meanings of special keys.

Networking

Atheros AR5212 801.11 abg Wi-Fi card doesn't resume

This problem in Intrepid is confirmed fixed in Jaunty.

Workaround for Intrepid: Add to /usr/lib/pm-utils/sleep.d/10NetworkManager:

 	thaw|resume)
+		ifconfig wifi0 up
 		resume_nm

Note that this file disappears on upgrade to Jaunty.

Ref: https://bugs.launchpad.net/ubuntu/+source/linux-restricted-modules/+bug/275692

Getting the Wi-Fi LED to flicker (with Atheros AR5212 801.11 abg Wi-Fi)

For Intrepid, add the following lines to /etc/sysctl.conf and reboot:

dev.wifi0.ledpin=1
dev.wifi0.softled=1

This does not work for Jaunty. In Jaunty there is no longer a Wi-Fi interface named wifi0; now there are interfaces wlan0 and wmaster0. Solution still being sought....

Networking not working after resume

The problem of networking not working after resume in Hardy is fixed in Intrepid and Jaunty.

Network-manager slow to reconnect

Reported here: https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/247381

Seemingly fixed in Jaunty.

Sound and video

Sound too quiet

The problem of sound being too quiet in Hardy is not present in Intrepid.

Sound crackles

In Jaunty (4 March 2009) the welcome jingle crackles.

This problem did not affect Intrepid.

Forgets screen resolution

In Jaunty (4 March 2009) when one logs back in, dual heads are always mirrored even if they have been configured previously. Resetting or restoring the configuration does not always fully succeed and the display is not always redrawn correctly.

Suspending and resuming seems to fix the problem.

compiz and dual-head

The Intel Graphics Media Accelerator X3100 is limited to a maximum 3D texture size of 2048 × 2048.

$ glxinfo -l 2>/dev/null | grep GL_MAX_TEXTURE_SIZE | sed 's/.*=[^0-9]//g'
2048

This means that compiz visual effects can only be enabled if the virtual screen area is 2048 wide/high or less. This means that if one has an external display with a width greater than 1024 pixels, it can't be located beside the laptop display if you want wobbly windows and such. E.g., a 1680 × 1050 monitor beside the X61's 1024 × 768 LCD panel would require a virtual screen that is at least 2704 pixels wide.

A wide external display can be placed above or below the laptop display, however. E.g., the above monitor placed "above" the laptop panel requires a virtual screen height of 1818 pixels. ("Above" here of course just refers to the relative position set in System | Preferences | Screen Resolution.)

compiz-check

$ wget http://www.blogage.de/files/9124/download -O compiz-check

jdthood@triffid:/usr/local/sbin$  ./compiz-check 

Gathering information about your system...

 Distribution:          Ubuntu 9.04
 Desktop environment:   GNOME
 Graphics chip:         Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 0c)
 Driver in use:         intel
 Rendering method:      AIGLX

Checking if it's possible to run Compiz on your system...

 Checking for texture_from_pixmap...               [ OK ]
 Checking for non power of two support...          [ OK ]
 Checking for composite extension...               [ OK ]
 Checking for FBConfig...                          [ OK ]
 Checking for hardware/setup problems...           [WARN]

Something potential problematic has been detected with your setup:
 Warning: PCI ID 8086:2a02 detected. 

Would you like to know more? (Y/n) y

 Your particular graphics chip may be blacklisted on certain distributions.
 However that does not necessarily mean you will not be able to run Compiz.

 You can skip this blacklist -- but keep in mind that you did so.
 Do not complain if you encounter any problems with Compiz afterwards. 

Do you want to skip blacklist checks by Compiz? (y/N)

Movies jitter

Ref: http://marc.info/?l=linux-thinkpad&m=123180105228016&w=2

Installing Ubuntu 8.10 (Intrepid Ibex) on a ThinkPad X61

Contents

Information about this model

Some available accessories for this model

DMI info for this model

glxgears

Issues

HDAPS

Can't load the `hdaps` module

Docking

/proc/acpi/ibm/bay

No /proc/acpi/ibm/dock

Hard freeze on undock from UltraBase

Do something on undock and dock

Keys

ThinkVantage key not seen by X

Fn-F5 emits KEY_RADIO instead of KEY_WLAN

Table of keycodes for special keys and key combinations

Networking

Atheros AR5212 801.11 abg Wi-Fi card doesn't resume

Getting the Wi-Fi LED to flicker (with Atheros AR5212 801.11 abg Wi-Fi)

Networking not working after resume

Network-manager slow to reconnect

Sound and video

Sound too quiet

Sound crackles

Forgets screen resolution

compiz and dual-head

compiz-check

Movies jitter

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Installing Ubuntu 8.10 (Intrepid Ibex) on a ThinkPad X61

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Information about this model

Some available accessories for this model

DMI info for this model

glxgears

Issues

HDAPS

Can't load the hdaps module

Docking

/proc/acpi/ibm/bay

No /proc/acpi/ibm/dock

Hard freeze on undock from UltraBase

Do something on undock and dock

Keys

ThinkVantage key not seen by X

Fn-F5 emits KEY_RADIO instead of KEY_WLAN

Table of keycodes for special keys and key combinations

Networking

Atheros AR5212 801.11 abg Wi-Fi card doesn't resume

Getting the Wi-Fi LED to flicker (with Atheros AR5212 801.11 abg Wi-Fi)

Networking not working after resume

Network-manager slow to reconnect

Sound and video

Sound too quiet

Sound crackles

Forgets screen resolution

compiz and dual-head

compiz-check

Movies jitter

Navigation menu

Search

Can't load the `hdaps` module