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I recently installed Slackware 12.0 on a new Thinkpad R61i. Shortly thereafter, I installed the 2.6.25 kernel, to get the Intel wireless drivers. Things work swimmingly, for the most part. The most critical problem I've come across deals with OpenGL.
Whatever OpenGL application I attempt to use (thus far) locks up my system. I can't exit X, I can't three-finger reboot. I just have to shut the system down. This happens when coming across the GL-enabled screensavers in xscreensaver, as well as other applications, such as the POV modeler.
I haven't tried disabling 3d acceleration yet; I may try that. But I'm kind of at a loss as to where else to start looking for symptoms and clues. If someone has some pointers as to where to start looking (nothing I can discern in /var/log/), I'd be appreciative.
Did you re-compile and re-install your OpenGL driver (Nvidia or Ati proprietary driver)? Forgetting that after a kernel upgrade is a common cause of your symptoms.
Nope. I'll look into recompiling the intel driver for the X3100. For some reason, I thought that'd be in modules. I assume that intel_agp is working with agpgart to control the agp interface, and is not the actual video driver. However, I'm not sure *what* driving the video, then, given that I have direct rendering enabled.
As I said: For whatever reason, it seems compiling the Intel drivers from source just doesn't usually work.
I've heard tell that I should uninstall the i810 driver to get the driver for the X3100 (GM965) to work correctly.
I think I might be running up against some issues with the 2.6.25 kernel, and my default kernel--the one that worked fine for quite a while before I compiled 2.6.25--won't boot correctly. So, I'm going to install Slackware 12.1, which uses the 126.96.36.199 kernel as the default, which includes the iw3945 firmware and drivers, and is apparently a bit less likely to cause conflicts than 2.6.25 might.