Informations about X11R7.6

Jeremy Huddleston jeremyhu at
Tue Aug 17 17:52:00 PDT 2010

On Aug 17, 2010, at 16:24, Marco Marco wrote:
>> Is the problem that you're defaulting to 800x600 or is the problem that X is not noticing other resolutions?  If it is the latter, the problem might be with your monitor's EDID.  Do you have this problem with other monitors as well?
> X not have other resolutions only: 800x600 or 640x480
>> What change do you make to xorg.conf to fix the problem?
> in the other versions of ubuntu the community of ubuntu had 
> has always found solutions for SiS mirage 3 by editing xorg.conf for example:
> -

Ok, so the problem reported there is related to ABI change in the server which should be something your distribution worries about for you.  It has nothing to do with resolutions.

My guess is that the problem should just "go away" for you in a future update, but you should open a bug report with ubuntu if you are still seeing the problem (and indeed it is the problem above and not something else)

> What do you see in your Xorg.log (/var/log/Xorg.0.log) about display resolutions?
> i have see the Xorg.0.log:
> the chipset supported are:
> [    21.065] (II) SIS: driver for SiS chipsets: SIS5597/5598, SIS530/620,
>     SIS6326/AGP/DVD, SIS300/305, SIS630/730, SIS540, SIS315, SIS315H,
>     SIS315PRO/E, SIS550, SIS650/M650/651/740, SIS330(Xabre),
>     SIS660/[M]661[F|M]X/[M]670/[M]741[GX]/[M]760[GX]/[M]761[GX]/[M]770[GX],
>     SIS340
> i have SiS 771/671......
> I'm not sure but I think that is why my resolution is 800x600

That line just identifies the driver.  You should see other lines about available modes... Try searching for the string "EDID" or "Modeline" ... I don't use the SiS drivers, but with Intel, I see:

(II) intel(0): EDID vendor "DEL", prod id 20827
(II) intel(0): Using EDID range info for horizontal sync
(II) intel(0): Using EDID range info for vertical refresh
(II) intel(0): Printing DDC gathered Modelines:
(II) intel(0): Modeline "720x350"x0.0   28.32  720 738 846 900  350 388 390 449 +hsync -vsync (31.5 kHz)
... (more Modelines)
(II) intel(0): EDID vendor "DEL", prod id 20827

If you can't find it, try just searching for the string "800x600"

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