Bug 65378 - Screen resolution (definition) failure with Intel G33 and monitor Iiyama E1902S
Summary: Screen resolution (definition) failure with Intel G33 and monitor Iiyama E1902S
Alias: None
Product: freedesktop.org
Classification: Unclassified
Component: Bugzilla (show other bugs)
Version: unspecified
Hardware: x86 (IA32) Linux (All)
: medium normal
Assignee: Rodrigo Vivi
QA Contact:
Depends on:
Reported: 2013-06-04 21:13 UTC by David
Modified: 2013-10-21 12:14 UTC (History)
2 users (show)

See Also:
i915 platform:
i915 features:

2013-06-04 Xog logs (10.66 KB, application/zip)
2013-06-04 21:13 UTC, David
Reply to comment #1 (to Rodrigo Vivi 2013-06-27 19:52:23 UTC) (10.43 KB, text/html)
2013-06-29 22:16 UTC, David
dmesg output (with boot option "drm.debug=0x06") (71.23 KB, text/plain)
2013-10-08 13:12 UTC, David

Description David 2013-06-04 21:13:38 UTC
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.
Comment 1 Rodrigo Vivi 2013-06-27 19:52:23 UTC
Could you please post output of this command:

lspci -nn | grep VGA

Also attach:
-- dmesg output (with boot option "drm.debug=0x06")
-- xorg.conf (if you changed any default options)
-- output of "xrandr --verbose" for display mode issue
Comment 2 David 2013-06-29 22:12:47 UTC
(In reply to comment #1)

I attach the output I could get, in a LibreOffice file.
Comment 3 David 2013-06-29 22:16:01 UTC
Created attachment 81726 [details]
Reply to comment #1 (to Rodrigo Vivi 2013-06-27 19:52:23 UTC)
Comment 4 Rodrigo Vivi 2013-09-17 14:56:42 UTC
From: http://askubuntu.com/questions/19486/how-do-i-add-a-kernel-boot-parameter

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.
Comment 5 David 2013-10-08 13:12:22 UTC
Created attachment 87277 [details]
dmesg output (with boot option "drm.debug=0x06")
Comment 6 Rodrigo Vivi 2013-10-17 12:47:58 UTC
Hi David,

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

Comment 7 David 2013-10-21 09:31:39 UTC
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 ?
Comment 8 David 2013-10-21 12:14:40 UTC
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.

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