Nick Moeck: your patch is invalid. You need to edit the @ modified
section delimiters to have a valid patch.

Aryeh Gregor: I tried applying your patch on linux-image
2.6.31-17-generic but it does not apply:
'atkbd_volume_forced_release_keys' is not in standard kernel. I've fixed
it and you will find the 'generic' patch attached.

Nevertheless it does not fix the problem. See the following evtest
output:

Event: time 1263755205.200055, type 4 (Misc), code 4 (ScanCode), value 39
Event: time 1263755205.200081, type 1 (Key), code 57 (Space), value 1
Event: time 1263755205.200086, -------------- Report Sync ------------
Event: time 1263755205.260386, type 4 (Misc), code 4 (ScanCode), value 39
Event: time 1263755205.260416, type 1 (Key), code 57 (Space), value 0

Event: time 1263755205.260421, -------------- Report Sync ------------
Event: time 1263755211.503327, type 4 (Misc), code 4 (ScanCode), value b0
Event: time 1263755211.503356, type 1 (Key), code 115 (VolumeUp), value 0
Event: time 1263755211.503361, -------------- Report Sync ------------
Event: time 1263755211.513389, type 4 (Misc), code 4 (ScanCode), value b0
Event: time 1263755211.513416, type 1 (Key), code 115 (VolumeUp), value 1
Event: time 1263755211.513422, -------------- Report Sync ------------
Event: time 1263755211.543370, type 4 (Misc), code 4 (ScanCode), value b0
Event: time 1263755211.543393, type 1 (Key), code 115 (VolumeUp), value 0
Event: time 1263755211.543396, -------------- Report Sync ------------
Event: time 1263755211.553415, type 4 (Misc), code 4 (ScanCode), value b0
Event: time 1263755211.553432, type 1 (Key), code 115 (VolumeUp), value 1
Event: time 1263755211.553435, -------------- Report Sync ------------
Event: time 1263755211.583391, type 4 (Misc), code 4 (ScanCode), value b0
Event: time 1263755211.583405, type 1 (Key), code 115 (VolumeUp), value 0
Event: time 1263755211.583407, -------------- Report Sync ------------
Event: time 1263755211.593480, type 4 (Misc), code 4 (ScanCode), value b0
Event: time 1263755211.593493, type 1 (Key), code 115 (VolumeUp), value 1

First is 'Space' keypress and release. The second is turning the wheel one 
notch Up.
a) the event is repeated 3 times - looks like the anti-repeat in 
drivers/input/keyboard/atkbd.c:482 does not work in this case
b) even with atkbd_setup_forced_release quirk the sequence is wrong - this is 
why I posted Space keypress for reference
VolumeUp key is depressed (0) then pressed (1) three times
This leaves the button in pressed state, causing the "sticking" behavior.

** Attachment added: "quirks for toshiba volume wheel"
   http://launchpadlibrarian.net/38007214/atkbd-toshiba-volume-quirk.patch

-- 
Toshiba Satellite U300 volume wheel sticking
https://bugs.launchpad.net/bugs/271706
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