|Summary:||DPMS (LCD powersave, poweroff) don't work|
|Product:||Power Management||Reporter:||Antonin Kolisek (akolisek)|
|Severity:||normal||CC:||lenb, rjw, yakui.zhao|
|Bug Depends on:|
Description Antonin Kolisek 2009-02-11 09:40:40 UTC
Latest working kernel version: 2.6.27.X Earliest failing kernel version: 2.6.28.X Distribution:Slackware 12.2 (current) Hardware Environment: Lenovo 3000 C100 (i915GM) Software Environment: Problem Description: If I boot on my PC linux-2.6.28.X LCD powerdown isn't functional. Steps to reproduce: If I set "setterm -blank 5 -powerdown on, setterm -powerdown 15" it goes only LCD blanking but powerdown isn't functional. In the X (x11-xorg + KDE4.2) I set xset +dpms xset dpms force off DPMS don't work too.
Comment 1 Antonin Kolisek 2009-02-11 09:42:11 UTC
Created attachment 20201 [details] .config Here is my .config.
Comment 2 ykzhao 2009-02-11 19:23:16 UTC
Hi, Antonin From the description it seems that this is a regression. Will you please use the git-bisect to identify the first bad commit which causes the regression? Thanks.
Comment 3 Antonin Kolisek 2009-02-12 08:44:53 UTC
Hello, sorry, but at this time I don't have the opportunity to test older working kernel with git-bisect.I don't have source and .config 2.6.27.X kernel version. Thanks.
Comment 4 Anonymous Emailer 2009-02-12 14:15:34 UTC
Reply-To: firstname.lastname@example.org (switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). Help. On Wed, 11 Feb 2009 09:40:40 -0800 (PST) email@example.com wrote: > http://bugzilla.kernel.org/show_bug.cgi?id=12690 > > Summary: DPMS (LCD powersave, poweroff) don't work > Product: Power Management > Version: 2.5 > KernelVersion: 188.8.131.52 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: Other > AssignedTo: firstname.lastname@example.org > ReportedBy: email@example.com > > > Latest working kernel version: 2.6.27.X > Earliest failing kernel version: 2.6.28.X > Distribution:Slackware 12.2 (current) > Hardware Environment: Lenovo 3000 C100 (i915GM) > Software Environment: > Problem Description: If I boot on my PC linux-2.6.28.X LCD powerdown isn't > functional. > > Steps to reproduce: > If I set "setterm -blank 5 -powerdown on, setterm -powerdown 15" it goes only > LCD blanking but powerdown isn't functional. In the X (x11-xorg + KDE4.2) I > set > xset +dpms > xset dpms force off > DPMS don't work too. > We seem to have a DPMS-related regression here and I don't even know which subsystem might have caused the breakage. (iow: who do I blame? ;)) Thanks.
Comment 6 ykzhao 2009-03-18 20:02:47 UTC
Hi, Antonin The DPMS is controlled by graphics driver. And it is not touched by ACPI/PM. Maybe you should open a new bug at http://bugs.freedesktop.org/ and attach the corresponding info. Thanks.
Comment 7 ykzhao 2009-07-20 14:49:24 UTC
As the LVDS DPMS is not controlled by OS, instead it is controlled by graphics driver. IMO this is a graphics driver bug rather than a power management bug. So this bug will be rejected. Thanks.