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.
Created attachment 20201 [details] .config Here is my .config.
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.
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.
Reply-To: akpm@linux-foundation.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) bugme-daemon@bugzilla.kernel.org 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: 2.6.28.4 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: Other > AssignedTo: power-management_other@kernel-bugs.osdl.org > ReportedBy: akolisek@linuxx.hyperlinx.cz > > > 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.
Bug #12653 could be a dup, but affects 2.6.26 as well.
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.
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.
It will be better that the bug reporter file the bug at http://bugs.freedesktop.org. And this bug will be rejected.