[SOLVED] Troubles with nouveau NVIDIA driver on 13.37
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People are reporting no problems for many NVIDIA cards, but with the one I have in 2 machines (made by e-Machines), which is based on a 6150SE video chip, as well as a laptop from one person on IRC (sorry, not technical details on his machine), there is an issue with the pixel and/or memory layout going all wrong. The end result is lots of stripes, vertical and horizontal, where the pixels have differing offsets relative to where they should be. It's kind of like "bit splatter" except that the pixels are the expected KDE color (aside from a few chopped horizontal black bars, which I'm guessing is parts of video buffer not written to).
The video chip is not defective because it works just fine on Ubuntu 11.04, 10.10, 10.04.2, and 9.10.
Running 64 bit vs. 32 bit makes no difference anywhere.
A number of configuration changes were suggested, but none helped. I then installed Slackware64-current in a spare partition and ran startx from there, and it worked perfectly. So I went back to the original Slackware64-13.37 system and installed the 220.127.116.11 kernel images and modules from -current, configured LILO to let me choose those, and rebooted with them. And that works, too. Later I did the same for 32-bit (yet another set of partitions), and success there, too.
I suspect the nouveau kernel module, or something it communicates to the corresponding X user space driver (which was not changed in any of this), to be the culprit in some way, for this particular chip.
So if you experiencing the same thing with NVIDIA video, particularly with a 6150SE chip, give the kernel packages for 18.104.22.168 a try. There are also packages for 22.214.171.124 in the testing section of 13.37 that may have worked, but I didn't try those.
nVidia Corporation C61 [GeForce 6150SE nForce 430] (rev a2)
Linux 126.96.36.199 x86_64 AMD Athlon(tm) II X2 255 Processor AuthenticAMD GNU/Linux
and I got those streaks, I got around the issue by creating file "/etc/modprobe.d/nouveau-kms.conf" with this one line "options nouveau noaccel=1". Granted I probably lost 3d acceleration, but I never use it so not a big deal for me
I *did* read in a nvidia forum (somewhere, link lost) that kernel 2.6.38.? was suppose to correct the issue with 6150SE. Sorry, do not remember the exact kernel minor vers #, I assumed it was one one in the testing dir so I did not pay too much attention
BTW, I have tried the 188.8.131.52 kernel in testing, and decided to stick with that because it was easier to make a modified install ISO that traded out the older kernel for this one. That way, I can do new installs and it automatically has the 184.108.40.206 kernel and modules (as well as all packages in patches).