Comment 26 for bug 446775

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Michael (mick3-de) wrote :

I installed 10.04 32 bit on my nx6125 and run into the same or similar issue with kernel 2.6.32-22. I found a workaround for getting suspend/resume to work at http://ubuntuforums.org/showthread.php?t=1371844&page=2 .

1) Disabling KMS for radeon with "radeon.modeset=0"
2) Suspend with "pm-suspend --quirk-radeon-off"

I just added 1) to the grub boot options. I guess a better place to set it would be /etc/modeprob.d/radeon-kms.conf. I had to run 2) pm-suspend manually as adding "--quirk-radeon-off" to /usr/lib/pm-utils/video-quirks/20-video-quirk-pm-hp.quirkdb and using suspend from the menu didn't work for me. This workaround does enable hibernation which also didn't work before.

So is this an upstream problem with the kernel mode settings for the radeon driver and the "quirk" settings in pm-utils? Does this effect other machines with the xpress 200m/RS480 or similar chipsets?