SIS 740 reduced resolution after driver upgrade

  • Thread starter Thread starter Steve
  • Start date Start date
S

Steve

After some changes to my machine with an ELITEGROUP
K7SOM+, Athlon XP 1700+, and 1 GB of memory, the
resolution of my display is restricted to 1024x769.

Before the changes, additional resolutions 1280x1024 and
1600x1200 were available.

This happened in the course of installing new hardware and
updating drivers (from Windows update as well as from the
Chipset manufactures).

This is rather painful as I just bought a 1280x1024 TFT-
flatscreen, which now has to tinker away at 1024x768.

I had updated the driver for the SIS 740 from Windows
Update to SIS 650_651_M650_M652_740 version 6.14.10.3540.

At about the same time I exchanged my CD-ROM drive by a
BenQ 4x4DVD-R/RW+ writer and change the respective IDE
channel to be using DMA if available.

Returning to the previous driver doesn't resolve the
problem. I tried that several times.

I have downloaded a whole history of drivers from SIS,
in particular 650 2.21, 650 2.19, 650 2.18, 650 2.15,
650 2.09. None of them supports more than 1024x768. By
tinkering around I once found 1280x768 to be supported,
but by now it reverted back to 1024x768 max. resolution.

I wonder if this may be caused by some hardware
incompatibility:

I have 2 hard disks attached to IDE0, and DVD/CD-Writer +
DVD-R/RW+ attached to IDE1. I also have an additional
ATI133/Raid controller with 2 more harddisks.

I had bought the TFT flat panel together with the DVD-
R/RW+ (BenQ 400), and as I installed the DVD-R/RW+ my RAID
array started to misbehave. At that time I had 1280x1024
resolution running. In order to resolve the RAID array
problem, I updated the respective driver (SIL 0680). That
got the RAID working again, but in the same process I also
updated the Display driver to version 6.14.10.3540. Also
at the same time, I changed my CPU/FSB clock from 100 MHz
to 133 MHz.

I tried to roll back all of the changes, but at the moment
have not:

Deinstalled the DVD-R/RW+
Rolled back the RAID controller driver (for obvious
reasons)

I have also tried setting the CPU/FSB clock back to 100
MHz, and tinkered around with the VGA related BIOS
settings (Graphic Win Size and Shared Memory Size).

All to no avail!

If somebody got some technical explanations on possible
causes, that would really be helpful.

Thanks in advance
Steve
 
Did anyone find a solution to this problem? I've encountered the same
problem.

Thanks.

Aaron
 
Did anyone find a solution to this problem? I've encountered the same
problem.

Thanks.

Aaron
 
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