On Wed, Oct 29, 2008 at 9:30 PM, Stephen Hemminger <[EMAIL PROTECTED]> wrote: > On my desktop with Intel graphics ( 82G33/G31 ), I noticed some problems when > doing resume from ram. The system takes some key strokes to come back > correctly: > > Resume (power button) > 1) LCD comes up in a resolution it can't display > Hit Alt-F1, Alt-F7 and gets back > 2) Screensaver unlock password box > 3) Screen goes black with only mouse cursor. VT swapping > again seems to get it back. > 4) Screen sometimes does a short flip to black and then back > some 5 seconds after that. No real reason why, some X server > braindamage. > > Steps 1 seem to be necessary, though I don't think it always lost > its mind about resolution. but these happen with 2.6.26 and 2.6.27 > > Step 3 is new in 2.6.28 > > It could be that since is Ubuntu Hardy, and their suspend/resume does lots of > "workaround" video wanking that it may just be fighting itself. Any ideas? > It could be related to 3D effects which I really don't care about and could > turn off.
If you're using suspend from the desktop GUIs, then HAL is calling the pm-suspend script with some quirks in its database. Since there have been fixes in the intel drm driver in the past few kernel releases, I suspect that some of the video BIOS quirks HAL thinks are needed aren't necessary anymore and are actually causing damage. You can try running `pm-suspend --quirk-none', which is exactly the same as what HAL is doing, but not doing any BIOS quirks. This should be basically equivalent to doing `echo mem > /sys/power/state'. You can see how HAL would normally be calling pm-suspend by looking at the quirks with `lshal | grep power_management.quirk' (with minor translation to pm-suspend options). If you've been running `echo mem > /sys/power/state' the whole time, then that's a kernel regression. -- Dan ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ -- _______________________________________________ Dri-devel mailing list Dri-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/dri-devel
