Created attachment 80310 [details]
2013-06-04 Xog logs
In reference to my question in : https://01.org/linuxgraphics/node/86
Hello, I wish to report this issue. I'm not sure if this is related to Linux graphics or to my Linux distribution.
OS : Ubuntu v13.04, 32 bits ( ubuntu-13.04-desktop-i386.iso ).
Screen : Iiyama E1902S screen resolution is 1280x1024, but is detected as 1024x768.
Computer : desktop HP dx2400 microtower series, graphics chipset is « Intel G33/G31 chipset family ».
I am a beginner on Linux, but a expert on Windows. I may provide more technical informations or tests if you need. Regards.
Could you please post output of this command:
lspci -nn | grep VGA
-- dmesg output (with boot option "drm.debug=0x06")
-- xorg.conf (if you changed any default options)
-- output of "xrandr --verbose" for display mode issue
(In reply to comment #1)
I attach the output I could get, in a LibreOffice file.
Created attachment 81726 [details]
Reply to comment #1 (to Rodrigo Vivi 2013-06-27 19:52:23 UTC)
1.Start your system and wait for the GRUB menu to show (if you don't see a GRUB menu, press and hold the left Shift key right after starting the system).
2.Now highlight the kernel you want to use (usually first option), and press the e key. You should be able to see and edit the commands associated with the highlighted kernel.
3.Go down to the line starting with linux and add your parameter drm.debug=0xe to its end.
4.Now press F10 to boot.
Created attachment 87277 [details]
dmesg output (with boot option "drm.debug=0x06")
It seems your monitor isn't sending a proper EDID witch is the data block with supported resolutions info.
I guess the only alternative for you is to manually add this mode you belive to be monitor maximum manually with
xrandr --newmode "1280x1024" 109.00 1280 1368 1496 1712 1024 1027 1034 1063 -hsync +vsync
xrandr --addmode default "1280x1024"
xrandr -s "1280x1024"
If this works properly go ahead and add the mode to your /etc/X11/xorg.conf file.
I'm closing this bug here, so if you need more help to add this configuration please post a comment at https://01.org/linuxgraphics/node/86
Thank you for trying :)
At the second line ("xrandr --addmode default "1280x1024"") I get the following reply " xrandr: cannot find output "default" ", is there a mistake ?
I found the solution (in askubuntu.com), I had to type xrandr then look at the name of the screen ("VGA1 connected") and replace the word "default" by "VGA1". It is working, this monitor supports 1280x1024.