Bugzilla – Bug 675116
intel [GM45] Screen brightness is dimmed irreversively and repetitively after screen lid was closed/locked
Last modified: 2011-05-28 09:06:45 UTC
User-Agent: Mozilla/5.0 (X11; U; Linux i686; de; rv:1.9.2.13) Gecko/20101203 SUSE/3.6.13-0.2.1 Firefox/3.6.13 The Test device is a Asus UL30vt Notebook, an external DVD drive and a openSUSE 11.4 M6* KDE live CD. After locking the screen or going into suspend, the screen shuts down. However, when I reactivated the screen for logging in, the screen brightness was dimmed down a bit. It is not possible to readjust the brightness after that. I was able to repeat this until the screen was completely dark and I could not but disconnect the device from power and restart. More severly, the same behaviour occured even after closing the notebook lid. After 5-7 times the screen was completely blank. That makes it unusable so far. I will provide more information if necessary. *It is possible that it is actually RC1, since I am not able to recognize the difference. Reproducible: Always Steps to Reproduce: 1. Use Asus Ul30vt as test device 2. Shut the lid or lock the screen 3. Try the relogin Actual Results: The screen was dimmed a bit. The difference was not far much, but It was recognizable. Expected Results: The screen brightness should not been altered by that. ASUS ul30vt
Which graphics hardware is this? Please add the output of "hwinfo --gfxcard".
linux:/home/linux # hwinfo --gfxcard 10: PCI 02.0: 0300 VGA compatible controller (VGA) [Created at pci.318] Unique ID: _Znp.VGg1kf4in3D SysFS ID: /devices/pci0000:00/0000:00:02.0 SysFS BusID: 0000:00:02.0 Hardware Class: graphics card Model: "Mobile Intel® GM45 Express Chipset" Vendor: pci 0x8086 "Intel Corporation" Device: pci 0x2a42 "Mobile Intel® GM45 Express Chipset" SubVendor: pci 0x1043 "ASUSTeK Computer Inc." SubDevice: pci 0x1af2 Revision: 0x07 Driver: "i915" Driver Modules: "drm" Memory Range: 0xfcc00000-0xfcffffff (rw,non-prefetchable) Memory Range: 0xd0000000-0xdfffffff (ro,non-prefetchable) I/O Ports: 0xcc00-0xcc07 (rw) IRQ: 47 (8545 events) I/O Ports: 0x3c0-0x3df (rw) Module Alias: "pci:v00008086d00002A42sv00001043sd00001AF2bc03sc00i00" Driver Info #0: XFree86 v4 Server Module: intel Driver Info #1: XFree86 v4 Server Module: intel 3D Support: yes Config Status: cfg=new, avail=yes, need=no, active=unknown 26: PCI 100.0: 0300 VGA compatible controller (VGA) [Created at pci.318] Unique ID: VCu0.Kl1ManH5idD Parent ID: vSkL.tGAA5cTEGvF SysFS ID: /devices/pci0000:00/0000:00:01.0/0000:01:00.0 SysFS BusID: 0000:01:00.0 Hardware Class: graphics card Model: "nVidia VGA compatible controller" Vendor: pci 0x10de "nVidia Corporation" Device: pci 0x0a74 SubVendor: pci 0x1043 "ASUSTeK Computer Inc." SubDevice: pci 0x1af2 Revision: 0xa2 Memory Range: 0xfd000000-0xfdffffff (rw,non-prefetchable,disabled) Memory Range: 0xe0000000-0xefffffff (ro,non-prefetchable,disabled) Memory Range: 0xfa000000-0xfbffffff (ro,non-prefetchable,disabled) I/O Ports: 0xdc00-0xdc7f (rw,disabled) Memory Range: 0xfe980000-0xfe9fffff (ro,non-prefetchable,disabled) IRQ: 10 (no events) Module Alias: "pci:v000010DEd00000A74sv00001043sd00001AF2bc03sc00i00" Driver Info #0: Driver Status: nvidiafb is not active Driver Activation Cmd: "modprobe nvidiafb" Driver Info #1: Driver Status: nouveau is not active Driver Activation Cmd: "modprobe nouveau" Config Status: cfg=new, avail=yes, need=no, active=unknown Attached to: #9 (PCI bridge) Primary display adapter: #10
Known issue. Workaround is disabling display power management or going into S3 and resume when this happens. *** This bug has been marked as a duplicate of bug 666162 ***
Some questions: Will this be fixed in the final version of 11.4? Is there another way of finding a fix such a another mesa version? Why is this a Dup of 666162? In that issue the screen gets completely blank, while here it just gets a bit darker. will disabling display power management mean that any display controls will not work?
(In reply to comment #4) > Will this be fixed in the final version of 11.4? Unlikely. We're already behind RC2. > Is there another way of finding a fix such a another mesa version? Not that I'm aware of. > Why is this a Dup of 666162? In that issue the screen gets completely blank, > while here it just gets a bit darker. It's just the darkest backlight level. This differs from panel to panel. JFYI, I see the same problem on my laptop which I'm using all the time. > will disabling display power management mean that any display controls will > not work? No, you can still control the backlight level. You just disable the display suspend modes.
Going into S3 mode does not affect that issue. Therefore trying to disable display power management would be my next step. How is that properly made in 11.4?