[Bug 721739] New: Brightness control does only work in dark ranges

newer
[Bug 722350] New: hald-addon-stor...

bugzilla_noreply＠novell.com

3 Oct 2011 3 Oct '11

09:52

https://bugzilla.novell.com/show_bug.cgi?id=721739 https://bugzilla.novell.com/show_bug.cgi?id=721739#c0 Summary: Brightness control does only work in dark ranges Classification: openSUSE Product: openSUSE 12.1 Version: Beta 1 Platform: i686 OS/Version: SuSE Other Status: NEW Severity: Critical Priority: P5 - None Component: Basesystem AssignedTo: bnc-team-screening@forge.provo.novell.com ReportedBy: thorsten@tws-home.de QAContact: qa@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (X11; Linux i686; rv:7.0) Gecko/20100101 Firefox/7.0 I tested this on the gnome live CD copied to an USB stick. Usually the brightness is controlled between 0% and 100% in 9 steps. Step 0 (0%) and Step 1 (~11%) work as expected. When I increase the brightness to Step 3 the display is extremely bright (looks like 100%). In step 4 the screen flickers with about 20Hz between 100% and 0%. When I continue increasing the brightness it takes a few seconds until the system freezes. This is reproducible on my Samsung NC10 to 100% for the flickering and about 50% for the freeze. With openSuse 11.4 everything works fine. How can I provide more detailed information? I left everything on default settings from the Live CD Gnome build 315 Reproducible: Always Steps to Reproduce: 1. Start Gnome Live CD Build 315 on a netbook/notebook 2. Observe initial brightness that is set to 100% 3. Increase / Decrease brightness with hardware button (move the value to 0% Actual Results: Screen Flickers and System crashes. Expected Results: The brightness should have been changed to the entered step values. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Show replies by date

bugzilla_noreply＠novell.com

22 Oct 22 Oct

13:43

New subject: [Bug 721739] Brightness control does only work in dark ranges

https://bugzilla.novell.com/show_bug.cgi?id=721739 https://bugzilla.novell.com/show_bug.cgi?id=721739#c1 Thorsten W. Schmidt changed: What |Removed |Added ---------------------------------------------------------------------------- Component|Basesystem |GNOME AssignedTo|bnc-team-screening@forge.pr |bnc-team-gnome@forge.provo. |ovo.novell.com |novell.com --- Comment #1 from Thorsten W. Schmidt 2011-10-22 13:43:20 UTC --- It looks like a fix is available here: https://bugzilla.gnome.org/show_bug.cgi?id=661287 So this is a bug in GNOME. Therefore move to component GNOME. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

22 Nov 22 Nov

08:00

New subject: [Bug 721739] Brightness control does only work in dark ranges

https://bugzilla.novell.com/show_bug.cgi?id=721739 https://bugzilla.novell.com/show_bug.cgi?id=721739#c2 Gary Ching-Pang Lin changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |NEEDINFO CC| |glin@suse.com InfoProvider| |thorsten@tws-home.de --- Comment #2 from Gary Ching-Pang Lin 2011-11-22 08:00:22 UTC --- Is this bug still in 12.1 final? The upstream changed the initial pre-dim brightness value to -1 and did some check before restoring the brightness. http://git.gnome.org/browse/gnome-settings-daemon/commit/?id=67785fa2b1043bd... -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

23 Nov 23 Nov

18:57

New subject: [Bug 721739] Brightness control does only work in dark ranges

https://bugzilla.novell.com/show_bug.cgi?id=721739 https://bugzilla.novell.com/show_bug.cgi?id=721739#c3 Thorsten W. Schmidt changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |NEW InfoProvider|thorsten@tws-home.de | --- Comment #3 from Thorsten W. Schmidt 2011-11-23 18:57:42 UTC --- The system does not crash anymore. So I would say this is not a critical bug anymore. But the brightness is changed between the three states 0%, 12% and 100%. When increasing from 12% the brightness is not set to level 25% but 100% to. Decreasing from 100% results in level 12% instead of level 88%. (the percentage values are only guessed) Do you need more information? Some log files? Which ones? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

24 Nov 24 Nov

04:07

New subject: [Bug 721739] Brightness control does only work in dark ranges

https://bugzilla.novell.com/show_bug.cgi?id=721739 https://bugzilla.novell.com/show_bug.cgi?id=721739#c4 --- Comment #4 from Gary Ching-Pang Lin 2011-11-24 04:07:50 UTC --- The gnome-settings-daemon relies on either gnome-rr or a helper program to get/set the backlight, but those two methods manipulate the devices in "/sys/class/backlight". There may be multiple devices in the dir. For example, there are 2 devices in my system: "/sys/class/backlight/acpi_video0" and "/sys/class/backlight/intel_backlight", and the structure: $ ls actual_brightness brightness max_brightness subsystem bl_power device power uevent To get the max_brightness: $ cat max_brightness To get the current brightness: $ cat brightness To set the brightness to 10, for example (must be "root"): # echo 10 > brightness I think you could try to set the brightness from 0 to max with each device and see if the issue persists. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

20:12

New subject: [Bug 721739] Brightness control does only work in dark ranges

https://bugzilla.novell.com/show_bug.cgi?id=721739 https://bugzilla.novell.com/show_bug.cgi?id=721739#c5 --- Comment #5 from Thorsten W. Schmidt 2011-11-24 20:12:39 UTC --- /sys/class/backlight contains acpi_video0 intel_backlight samsung values from intel_backlight max_brightness 312 type raw bl_power -130210976 vales from samsung max_brightness 8 type platform bl_power 0 values from acpi_video0 max_brightnes 7 type firmware bl_power 0 with acpi_video0 I can set the brightness without any problems. But when I try to set the brightness with samsung I get the following echo X > brightness; cat actual_brightness X==0 -> 0 X==1 -> 1 X==2 -> 8 X==3 -> 7 X==4 -> 4 X==5 -> 2 X==6 -> 7 X==7 -> 7 X==8 -> 2 The values I get seem to depend on the brightness I had when changing the brightness. When setting the brightness to 0, 1 or 7 it will stay in this level. All other values set the brightness for a fraction of a second and change it then to a random(?) value. If I set the value several times to the same level, then the brightness level stays on the chosen level. echo 5 > brightness; sleep 1; echo 5 > brightness; cat actual_brightness 5 But when doing the following the screen flickers between dark and bright with about 10-15Hz echo 4 > brightness; echo 4 > brightness with intel_backlight I can set the maximum brightness. So when I set it to 150 instead of 312 I can use the hardware keys to change the brightness between 5% and 50% X==0 -> black screen X==1,3,5,7,9,11,13,15,17,19 -> maximum brightness X==2,4,6,8,10,12,14,16,18 -> brightness increases from about 0% to 10% constantly X==20 -> brightness about 10% X==312 -> maximum brightness between X==20 and X==312 the brightness increases constantly I hope this helps. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

25 Nov 25 Nov

02:17

New subject: [Bug 721739] Brightness control does only work in dark ranges

https://bugzilla.novell.com/show_bug.cgi?id=721739 https://bugzilla.novell.com/show_bug.cgi?id=721739#c6 --- Comment #6 from Gary Ching-Pang Lin 2011-11-25 02:17:36 UTC ---

...

From the comment of bgo#660755[*]:

http://www.mjmwired.net/kernel/Documentation/ABI/stable/sysfs-class-backligh... The kernel ABI suggests that firmware control should be preferred to platform control. It seems that g-s-d used "samsung" instead of "acpi_video0". There are basically two bugs: 1. Wrong device: The priority of samsung is lower than acpi_video0 in the g-s-d backlight helper, so I think that gnome-rr chose the wrong device. 2. Bad backlight handling in samsung_laptop The "samsung" device is created by the kernel driver: "samsung_laptop", and it didn't set the correct brightness to the LCD panel. I'll dig gnome-rr and see what I can do. We should also file a bug against samsung_laptop. [*] https://bugzilla.gnome.org/show_bug.cgi?id=660755#c8 -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

02:51

New subject: [Bug 721739] Brightness control does only work in dark ranges

https://bugzilla.novell.com/show_bug.cgi?id=721739 https://bugzilla.novell.com/show_bug.cgi?id=721739#c7 Gary Ching-Pang Lin changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |NEEDINFO InfoProvider| |gregkh@suse.com --- Comment #7 from Gary Ching-Pang Lin 2011-11-25 02:51:04 UTC --- Hmmm, it's nothing to do with gnome-rr. The intel video driver decides which device to be used, and it prefers platform control :-( Hi Greg, Is there any fix available for the samsung_laptop? Thanks. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

16:12

New subject: [Bug 721739] Brightness control does only work in dark ranges

https://bugzilla.novell.com/show_bug.cgi?id=721739 https://bugzilla.novell.com/show_bug.cgi?id=721739#c8 Greg Kroah-Hartman changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEEDINFO |NEW InfoProvider|gregkh@suse.com | --- Comment #8 from Greg Kroah-Hartman 2011-11-25 16:12:09 UTC --- Fix for what? There are updates to the driver, yes, but it should work for this machine as-is, but the intel driver should not be controlling the laptop, the samsung-laptop driver should be, for the backlight. if you boot with "acpi_video=vendor" on the kernel command line, does this fix the issue? -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

6 Dec 6 Dec

04:42

New subject: [Bug 721739] Brightness control does only work in dark ranges

https://bugzilla.novell.com/show_bug.cgi?id=721739 https://bugzilla.novell.com/show_bug.cgi?id=721739#c9 --- Comment #9 from Gary Ching-Pang Lin 2011-12-06 04:42:39 UTC --- Found two upstream kernel patches: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=bee4... http://git.kernel.org/?p=linux/kernel/git/torvalds/linux.git;a=commit;h=ac08... -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

7 Dec 7 Dec

08:29

New subject: [Bug 721739] Brightness control does only work in dark ranges

https://bugzilla.novell.com/show_bug.cgi?id=721739 https://bugzilla.novell.com/show_bug.cgi?id=721739#c10 Vincent Untz changed: What |Removed |Added ---------------------------------------------------------------------------- Component|GNOME |Kernel AssignedTo|bnc-team-gnome@forge.provo. |kernel-maintainers@forge.pr |novell.com |ovo.novell.com --- Comment #10 from Vincent Untz 2011-12-07 08:29:10 UTC --- Not a GNOME issue but a kernel one, according to Gary's comments, so moving there. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

6 Mar 6 Mar

20:57

New subject: [Bug 721739] Brightness control does only work in dark ranges

https://bugzilla.novell.com/show_bug.cgi?id=721739 https://bugzilla.novell.com/show_bug.cgi?id=721739#c11 Jeff Mahoney changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |FIXED AssignedTo|kernel-maintainers@forge.pr |jeffm@suse.com |ovo.novell.com | --- Comment #11 from Jeff Mahoney 2012-03-06 20:57:04 UTC --- The first patch was applied via 3.1.1. I've applied the second patch to openSUSE 12.1. Closing as fixed. -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

10 Apr 10 Apr

14:01

New subject: [Bug 721739] Brightness control does only work in dark ranges

https://bugzilla.novell.com/show_bug.cgi?id=721739 https://bugzilla.novell.com/show_bug.cgi?id=721739#c Swamp Workflow Management changed: What |Removed |Added ---------------------------------------------------------------------------- Status Whiteboard| |obs:running:440:low -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

20 Apr 20 Apr

14:09

New subject: [Bug 721739] Brightness control does only work in dark ranges

https://bugzilla.novell.com/show_bug.cgi?id=721739 https://bugzilla.novell.com/show_bug.cgi?id=721739#c12 --- Comment #12 from Swamp Workflow Management 2012-04-20 14:09:09 UTC --- openSUSE-SU-2012:0540-1: An update that solves 6 vulnerabilities and has 17 fixes is now available. Category: security (low) Bug References: 676204,718918,719416,721739,722350,726600,729247,731387,731590,732908,738397,741128,744658,745832,746695,746980,747404,749569,749651,750079,750106,750959,755812 CVE References: CVE-2011-1083,CVE-2011-4077,CVE-2011-4086,CVE-2012-1090,CVE-2012-1097,CVE-2012-1146 Sources used: openSUSE 12.1 (src): kernel-docs-3.1.10-1.9.2, kernel-source-3.1.10-1.9.1, kernel-syms-3.1.10-1.9.1 -- Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

bugzilla_noreply＠novell.com

19 Feb 19 Feb

04:47

New subject: [Bug 721739] Brightness control does only work in dark ranges

http://bugzilla.novell.com/show_bug.cgi?id=721739 Swamp Workflow Management changed: What |Removed |Added ---------------------------------------------------------------------------- Whiteboard|obs:running:440:low | -- You are receiving this mail because: You are on the CC list for the bug.

3362

Age (days ago)

4597

Last active (days ago)

List overview

Download

14 comments

1 participants

participants (1)

bugzilla_noreply＠novell.com

[Bug 721739] New: Brightness control does only work in dark ranges

tags

participants (1)