I have Debian GNU/Linux 7 without GUI.
My LCD monitor native resolution is 1280x1024. I'd like my OS to use this resolution by default on
These are the lines from my
I have run
sudo update-grub, it went without any problems. Rebooted. This should be enough but it's not.
The behavior is as follows:
- GRUB2 menu always uses the configured resolution. I have checked with different
GRUB_GFXMODEit can use lower resolutions as well, in this case the picture is stretched and utilizes the entire screen – all OK.
- When the system starts, few initial messages are displayed as expected and the monitor works with its native resolution.
- At one moment, about when the message
Waiting for /dev to be fully populated...appears, the screen flickers. Just after a second the picture is back with the same resolution but there is garbage (like static pixel noise) at the bottom and on the right edge of the screen.
- When I log in and work afterwards, there are two stripes (bottom, right edge) that are unavailable to me.
This is how it looks (excuse low photo resolution, it shouldn't matter though). Blue
mc window should occupy the entire screen. Graphical garbage can bee seen in upper right corner. The stripe at the bottom is all black but often there is garbage there as well.
Despite GRUB2 setting, my OS doesn't use the desired resolution. This is the output of
mode "1024x768" geometry 1024 768 1280 1024 32 timings 0 0 0 0 0 0 0 accel true rgba 8/16,8/8,8/0,0/0 endmode
Still, the monitor does use its native resolution. See the last line on this photo:
How to make GRUB2 setting work?
- The hardware is JBC362F36W-2600-B Barebone Mini-ITX System.
- Its motherboard is NF36-N2600.
- The graphics is integrated to Intel Atom N2600 CPU.
- The cable is DVI-D.
- The monitor is Philips 190B. It behaves well with GRUB2 menu, so I don't think there is something wrong with it.
# lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation Atom Processor D2xxx/N2xxx Integrated Graphics Controller (rev 09) # uname -a Linux [censored] 3.2.0-4-amd64 #1 SMP Debian 3.2.81-1 x86_64 GNU/Linux # grep -A 6 1280x1024-60 /etc/fb.modes mode "1280x1024-60" # D: 108.00 MHz, H: 63.981 kHz, V: 60.02 Hz geometry 1280 1024 1280 1024 8 timings 9260 248 48 38 1 112 3 hsync high vsync high endmode