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I'm using dwm and xbacklight to adjust the backlight through the xorg-server. However, after xscreensaver goes off, the backlight has a dim of 0, then I have to brighten it up again. Does anybody know what could be the problem? Thanks.
Linux x9090 3.11.1-1-ARCH #1 SMP PREEMPT Sat Sep 14 19:30:21 CEST 2013 x86_64 GNU/Linux
00:02.0 VGA compatible controller: Intel Corporation 3rd Gen Core processor Graphics Controller (rev 09)
local/xf86-video-intel 2.21.15-1 (xorg-drivers xorg)
X.org Intel i810/i830/i915/945G/G965+ video drivers
Last edited by inurl (2014-01-17 00:01:03)
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echo 6 > /sys/class/backlight/intel_backlight/brightnessOffline
Tried that but keeps doing the same thing. I wonder if it's an issue with xf86-video-intel...
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Yeah, possible... You can downgrade the xf86-video-intel.
https://wiki.archlinux.org/index.php/Do … g_Packages
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Downgrade to any particular version of the xf86-video-intel? Did you have the same issue? Thanks
Last edited by inurl (2013-10-10 02:32:19)
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I think you try the version before the latest..
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I downgraded to the following versions: 2.21.14, 2.21.13 and upgraded to 2.99.904 and compiled the source from the latest git repo. None of these solved the issue. Now I'm wondering if it's an issue with X or perhaps the kernel (running 3.11.5-1-ARCH). Any other thoughts? Thanks.
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I use the same kernel and the latest intel driver, and I don't have any problems with xbacklight, so I think it's xscreensaver.
Maybe try another?
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@NeanderMarcl, thanks for your reply. I removed xscreensaver, changed DPMS settings `xset -dpms` and `xset s off` but neither of them solved the issue. BTW, is a Vaio SVS131.
Last edited by inurl (2013-10-18 21:42:33)
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Actually I just noticed that even without screensaver, if I turn off my monitor using
sleep 1; xset dpms force offthen after hitting a key to turn it back on, my screen is dimmed. Here are my current DPMS settings:
$ xset q
Screen Saver:
prefer blanking: yes allow exposures: yes
timeout: 600 cycle: 600
DPMS (Energy Star):
Standby: 600 Suspend: 600 Off: 600
DPMS is Enabled
Monitor is OnLast edited by inurl (2013-10-18 23:17:35)
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Have you tried another lock manager, such as SLiM ?
I have the same parameter timeout:600 in my xset..
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I'm not currently using any lock manager after removing xscreensaver. I've been thinking if acpi could be the cause...
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Maybe your problem is related to this?
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Actually I just noticed that even without screensaver, if I turn off my monitor using
sleep 1; xset dpms force offthen after hitting a key to turn it back on, my screen is dimmed.
I can reproduce this on my machine with Intel HD 4000 graphics. It's pretty annoying because this happens whenever I don't use the laptop for a while. I don't use any screensaver or screenlocker.
Here are my current DPMS settings:
$ xset q Screen Saver: prefer blanking: yes allow exposures: yes timeout: 600 cycle: 600 DPMS (Energy Star): Standby: 600 Suspend: 600 Off: 600 DPMS is Enabled Monitor is On
And here are mine:
$ xset q
[...]
Screen Saver:
prefer blanking: yes allow exposures: yes
timeout: 600 cycle: 600
Colors:
default colormap: 0x22 BlackPixel: 0x0 WhitePixel: 0xffffff
Font Path:
/usr/share/fonts/misc/,/usr/share/fonts/TTF/,/usr/share/fonts/Type1/,built-ins
DPMS (Energy Star):
Standby: 600 Suspend: 600 Off: 600
DPMS is Enabled
Monitor is Onlooks like we have the same settings.
I regulate my monitor's brightness with the file /sys/class/backlight/intel_backlight/brightness
Whenever the monitor is turned on again, the content of the file is the number 51
The maximum brightness value that I can write into the file is 4437.
51 is very dark and reasonable brightness values start at around 1000
Last edited by essence-of-foo (2013-10-20 08:48:04)
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@essence-of-foo, Exactly the same issue and the same Intel HD 4000 card. However, temporarily I installed Ubuntu 13.10 and the issue does not occur in there, so I'm hoping that upgrading/downgrading a package will fix the issue, just need to figure out what package...
@orschiro I looked into it and I was able to disable the DPMS screensaver, however, that just made the screen not to go blank.
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This was fixed apparently with the latest update of:
# pacman -Q xf86-video-intel
xf86-video-intel 2.99.907-1# uname -a
Linux 3.12.7-2-ARCHOffline