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Loslobo 01-04-2009 07:30 PM

Downgrading the xorg intel video driver in Slackware12.2
A what-I-had-to-do-to-get-it-working story:

I installed slackware 12.2 on a gigabyte G31 motherboard using the intel G31 integrated graphics chip. Having run Slackware 12.1 successfully in 24 bit color using the intel driver on the same board with a 1280x1024 LCD display, I was surprised to encounter xorg resolution problems in 12.2.

The problems were inconsistent resolution settings and icon placement in KDE after logging in from kdm as well as kdm staying stuck in a lower resolution mode. Various tries in changing xorg.conf settings, from modeline, resolution and driver settings didn't seem to work. Although Vesa did work, it couldn't handle resolutions higher than 1024x768.

The xorg intel driver in slackware 12.2 is version 2.4.3 while the intel driver in 12.1 is 2.2.1

On a lark, I went back to run level 3 and substituted the older intel xf86-video-intel driver from Slackware 12.1 into 12.2. Removing the driver first before installing the older one. Both slackware OS's use the same version of the xorg-server.

A quick redo in xorgconfig. And presto. No more problems.

I did notice a few postings on xorg developer sites describing bug reports with similar symptons in some later versions of the intel drivers.

Has anyone else encountered similar troubles? And is downgrading to an earlier slackware xorg driver a good enough workaround?

amani 01-04-2009 07:40 PM

Was your xorg.conf noticed in the first place in 12.2?

X version in 12.2?

Loslobo 01-04-2009 11:24 PM


Originally Posted by amani (Post 3397269)
Was your xorg.conf noticed in the first place in 12.2?

X version in 12.2?

Slackware 12.2 uses xorg-server 1.4.2. Up to date package revisions of Slackware 12.1 run xorg-server 1.4.2 as well.

To recap, I only substituted the xf86-video-intel-2.2.1 driver package from 12.1 in place of xf86-video-intel-2.4.3 found in Slackware 12.2

While the original intel video driver in 12.2 seemed to run xorg.conf. When KDE came up. I found myself unable to keep resolutions settings in KDE from taking hold and the kdm login screen seemed stuck in 1024x768 mode. Even more telling was getting apparent resolution changes after adjusting them in the KDE control panel and relogging back in to find resolution changes not taking hold. And finding the dpi settings and font sizes blown up in size. (Yes I hit that checkbox in KDE to save changes on login)

It was only after I changed to the older video driver (xf86-video-intel-2.2.1) from slackware 12.1 and rerunning xorgconfig that everything seemed to run correctly. The irony is the new xorg.conf in this instance is line for line the same as the original. Only the video driver is different.

tramni1980 01-05-2009 03:08 AM

I also have an intel videocard and use the i810 driver. Since Slackware-12.1 I have been having problems with it:
In Slackware-12.2 I experince freezing no more, but I do not have hardware acceleration no matter that I followed all the instructions in Changes and Hints.

The problems with the intel driver seem to be ubiquitous as some googling might suggest. Let's hope that the situation will change in the future.

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