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#1 2012-10-14 08:27:16

Greed1sGood
Member
Registered: 2012-02-11
Posts: 41

Wrong resolution after resuming from sleep

I started having this weird problem some time ago, it's important to note that I haven't had this problem right after installing Arch.
After waking my laptop from sleep I get a brief black screen with "ACPI: unable to dock" error message and then the desktop shows up but with a resolution of 1333x750 which oddly enough does not match any mode reported by xrandr, and I can't manually switch to any other resolution untill I either log off and logon or reboot the laptop.

Here's the xrandr output, right after resume:

Screen 0: minimum 320 x 200, current 1600 x 900, maximum 8192 x 8192
LVDS1 connected 1333x750+0+0 (normal left inverted right x axis y axis) 310mm x 174mm
   1600x900       60.0*+
   1024x768       60.0  
   800x600        60.3     56.2  
   640x480        59.9  
VGA1 disconnected (normal left inverted right x axis y axis)
HDMI1 connected 1600x900+0+0 (normal left inverted right x axis y axis) 698mm x 392mm
   1920x1080      50.0*+   60.0     24.0     30.0     25.0  
   1680x1050      59.9  
   1680x945       60.0  
   1400x1050      59.9  
   1600x900       60.0  
   1280x1024      60.0  
   1440x900       59.9  
   1280x960       60.0  
   1366x768       60.0  
   1360x768       60.0  
   1280x800       59.9  
   1280x768       60.0  
   1280x720       60.0     50.0  
   1440x576       25.0  
   1024x768       60.0  
   1440x480       30.0  
   1024x576       60.0  
   800x600        60.3     56.2  
   720x576        50.0  
   848x480        60.0  
   720x480        59.9  
   640x480        59.9     59.9  

normal xrandr output:

Screen 0: minimum 320 x 200, current 1600 x 900, maximum 8192 x 8192
LVDS1 connected 1600x900+0+0 (normal left inverted right x axis y axis) 310mm x 174mm
   1600x900       60.0*+
   1024x768       60.0  
   800x600        60.3     56.2  
   640x480        59.9  
VGA1 disconnected (normal left inverted right x axis y axis)
HDMI1 connected 1600x900+0+0 (normal left inverted right x axis y axis) 698mm x 392mm
   1920x1080      50.0*+   60.0     24.0     30.0     25.0  
   1680x1050      59.9  
   1680x945       60.0  
   1400x1050      59.9  
   1600x900       60.0  
   1280x1024      60.0  
   1440x900       59.9  
   1280x960       60.0  
   1366x768       60.0  
   1360x768       60.0  
   1280x800       59.9  
   1280x768       60.0  
   1280x720       60.0     50.0  
   1440x576       25.0  
   1024x768       60.0  
   1440x480       30.0  
   1024x576       60.0  
   800x600        60.3     56.2  
   720x576        50.0  
   848x480        60.0  
   720x480        59.9  
   640x480        59.9     59.9  

kernel version:

3.5.6-1-ARCH

graphic card:

00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09)

* I have an external tv connected to the laptop using a DP to HDMI cable, after booting I set the resolution using:

xrandr --output LVDS1 --mode 1600x900 --output HDMI1 --mode 1920x1080 --scale 0.833x0.833

Last edited by Greed1sGood (2012-10-14 13:43:34)

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