Jonathan,
thanks, it's as I thought: system.hardware.product = '28844WU' (string)
Can you please try the following:
sudo gedit /usr/share/hal/fdi/information/10freedesktop/20-video-
quirk-pm-ibm.fdi
and change line 36 from
<match key="system.hardware.product" prefix="2672;2673">
to
<match key="system.hardware.product" prefix="2672;2673;28844">
? After that, please reboot your machine (just to be 100% sure that it
gets picked up) and try to suspend. Does it work?
--
[Hardy] Thinkpad X31 (ATI Radeon M6) suspend backlight on
https://bugs.launchpad.net/bugs/199059
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