SIS662 graphics driver doesn't work

[Denis]

I have Gutsy running on an INTEL D201GLY with a 1440x900 LCD screen

This Intel motherboard uses an SIS662 chip set with integrated graphics

Installation seemed to work OK except that the graphics is very noisy and breaks up

I read somewhere that you can get the noise to go away by running

sudo dpkg-reconfigure xserver-xorg and selecting Vesa drivers

The noise goes away, but picture is fuzzy because the max resolution is 1024x768

The target resolution of 1440x900 does not appear to be supported

Any ideas?

Denis

[Nanley Chery (nanoman)]

Thank you for your comments. This does not appear to be a bug report and we are closing it. We appreciate the difficulties you are facing, but it would make more sense to raise your question in the support tracker. [WWW] https://answers.launchpad.net/ubuntu

[Denis (dredfern)]

Hi Nanley.

Thanks for your quick response. I am new to Ubuntu, and so if I did not
frame this bug report properly, I'm sorry. The graphics driver that Ubuntu
selected for the SIS662 does not work properly. Would you please take the
time to explain to me why that is not a bug?

Thanks

Denis
----- Original Message -----
From: "Nanley Chery" <email address hidden>
To: <email address hidden>
Sent: Wednesday, November 21, 2007 6:59 PM
Subject: [Bug 164258] Re: SIS662 graphics driver

Thank you for your comments. This does not appear to be a bug report and
we are closing it. We appreciate the difficulties you are facing, but it
would make more sense to raise your question in the support tracker.
[WWW] https://answers.launchpad.net/ubuntu

** Changed in: ubuntu
       Status: New => Invalid

--
SIS662 graphics driver
https://bugs.launchpad.net/bugs/164258
You received this bug notification because you are a direct subscriber
of the bug.

[Eetu Huisman (eh)]

I think this should be reopened. I've added a link to the upstream bug about the same issue.

There are some patches from SiS at http://bugs.freedesktop.org/show_bug.cgi?id=9409, but apparently the upstream maintainer wasn't too satisfied with the quality of the code. Hopefully some progress will be made at some point...

[Denis (dredfern)]

Dear Eetu,

Thanks for letting me know. I don't feel quite so stupid now as when my bug
report was dismissed by Nanley Chery.

Is there some prospect this might get fixed one day? The SiS guy seems to
be busy with another project

Regards,

Denis
----- Original Message -----
From: "Eetu Huisman" <email address hidden>
To: <email address hidden>
Sent: Sunday, December 23, 2007 5:42 PM
Subject: [Bug 164258] Re: SIS662 graphics driver

I think this should be reopened. I've added a link to the upstream bug
about the same issue.

There are some patches from SiS at
http://bugs.freedesktop.org/show_bug.cgi?id=9409, but apparently the
upstream maintainer wasn't too satisfied with the quality of the code.
Hopefully some progress will be made at some point...

** Bug watch added: freedesktop.org Bugzilla #12813
   https://bugs.freedesktop.org/show_bug.cgi?id=12813

** Also affects: xorg-server via
   https://bugs.freedesktop.org/show_bug.cgi?id=12813
   Importance: Unknown
       Status: Unknown

--
SIS662 graphics driver
https://bugs.launchpad.net/bugs/164258
You received this bug notification because you are a direct subscriber
of the bug.

[Eetu Huisman (eh)]

Changed the tracked bug to the original one. The duplicate was in fact closed as duplicate.

[Jane Fong (emefbee)]

The driver remains buggy, problem is either with asynchronous memory read from the graphics card or masking problem, who knows? At 768x576 @ 60Hz resolution the screen is almost undistorted, but at the resolution the Ubuntu 8.04 was trying to install (1600x1200?) it was close to impossible to navigate on the screen.

This may be a problem with the double-buffering or anything to do with memory access.

The distortion works this way:
some line address ranges get confused, so that whole columns may appear on a second location.

Even worse thing happened after I took the photo. I am not able to switch monitor resolution from the 1280x1024 to anything else!

[papukaija (papukaija)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This particular bug has already been reported and is a duplicate of bug 297335, so it is being marked as such. Please look at the other bug report to see if there is any missing information that you can provide, or to see if there is a workaround for the bug. Additionally, any further discussion regarding the bug should occur in the other report. Feel free to continue to report any other bugs you may find.