Ubuntu
xorg package

wrong resolution with Intel 915GM; 915resolution is ineffective; restarting gdm required every time

Bug #63518 reported by Jan on 2006-10-02

This bug report is a duplicate of: Bug #3731: Xorg resolution falling back to 640x480 and/or 800x600 when h/v freqs incorrect. Edit Remove

Affects		Status	Importance	Assigned to	Milestone
	xorg (Ubuntu)	New	Undecided	Unassigned

Bug Description

I use a MSI Megabook S260 with Intel 915GM chipset. Everytime I start the notebook, X is started with a wrong resolution, 800x600 (? if I remember correctly) instead of 1280x800. Restarting X via control+alt+del does not help. Installing and configuring 915resolution correctly does not help also. I need to restart gdm (sudo /etc/init.d/gdm restart) every time, to get X started with the correct resolution. The autoconfiguration of /etc/X11/xorg.conf seems to be correct. I have this problem with Breezy and Dapper. Attached is /etc/X11/xorg.conf and /var/log/Xorg.0.log. Please let me know if you need more information!!

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Jan (jan23) wrote on 2006-10-02:

/etc/X11/xorg.conf Edit (4.2 KiB, text/plain)

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Jan (jan23) wrote on 2006-10-02:

/var/log/Xorg.0.log Edit (65.7 KiB, text/plain)

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Jan (jan23) wrote on 2006-10-18:

915resolution works fine to set up the correct resolution in Edgy Beta.

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Bryce Harrington (bryce) wrote on 2007-04-06:

According to the following link, this laptop has a buggy video bios:

http://www.teleost.org/docs/gma-900-linux.html

Have you tried the solutions described on that page?

In the xorg log file you posted, it looks like the following is the error you're hitting:

(WW) I810(0): config file hsync range 28-64kHz not within DDC hsync ranges.
(WW) I810(0): config file vrefresh range 43-60Hz not within DDC vrefresh ranges.
(II) I810(0): Standardbildschirm: Using hsync range of 28.00-64.00 kHz
(II) I810(0): Standardbildschirm: Using vrefresh range of 43.00-60.00 Hz
(II) I810(0): Increasing the scanline pitch to allow tiling mode (1280 -> 2048).

Have you doublechecked that your monitor's hsync and vrefresh ranges are correct for your hardware?

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Jan (jan23) wrote on 2007-04-07:

No I did not doublecheck the hsync and vrefresh ranges. How can I do this? Also I would like to check if Feisty still recognizes the resolution wrongfully. Unfortunately I don't have a CD drive in the moment to start a Feisty live CD so please be patient for some days.

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Jan (jan23) wrote on 2007-04-27:

Now I have Feisty installed on the system. Still I can not try to boot a live CD so how could I try to detect the resolution automatically?

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Bryce Harrington (bryce) wrote on 2007-07-18:

Hi Lutz,

This is a long-known issue (bug 3731). There are several ways you can work around it, however:

1. Remove your /etc/X11/xorg.conf file, and allow Xorg to autodetect everything.

# mv /etc/X11/xorg.conf /etc/X11/xorg.conf.myorig
# reboot

In the future, we plan to do something like this, to allow Xorg to handle autodetection.

2. Run 'displayconfig-gtk' to select your monitor and video card.

This is the fallback solution we plan to use in the future. It requires that you know both the monitor and video card, and that both are also listed in our databases.

3. Specify your monitor's exact refresh rates in xorg.conf

Section "Monitor"
Identifier "Standardbildschirm"
Option "DPMS"
HorizSync <<specify horizontal sync>>
VertRefresh <<specify vertical refresh>>
EndSection

4. In xorg.conf, remove the refresh rates:

Section "Monitor"
Identifier "Standardbildschirm"
Option "DPMS"
EndSection