I'm also having OpenGL problems with my 915GM graphics (Thinkpad Z60m). The symptoms are as reported: viewport cut-off in various apps, in google earth: wrong viewport and messed up graphics.
So I decided to give the compiz repository a try. First I only updated the i810 driver, logged out, restarted X, logged in again. Unfortunately acceleration was now broken (as reported by googleearth). I thought that maybe this driver depended on newer mesa-libs, so I did a full update in adept. Now OpenGL is completely broken. glxgears fails with: $ glxgears glxgears: intel_ioctl.c:62: intelEmitIrqLocked: Assertion `((*(int *)intel->driHwLock) & ~0x40000000U) == (0x80000000U|intel->hHWContext)' failed. Aborted Google Earth gives the following error message: do_wait: drmWaitVBlank returned -1, IRQs don't seem to be working correctly. Try running with LIBGL_THROTTLE_REFRESH and LIBL_SYNC_REFRESH unset. (and it's *extremely* slow, much slower than with software rendering) Rebooting doesn't help. Here's the complete list of updated packages: xserver-xorg-driver-i810 1:1.5.0.1-0ubuntu2 libdrm2 2.0.2+cvs20060824 libgl1-mesa 6.5.1+cvs20060824 libgl1-mesa-dri 6.5.1+cvs20060824 libglu1-mesa 6.5.1+cvs20060824 libpoppler1 0.5.3-0ubuntu1 libpoppler1-qt 0.5.3-0ubuntu1 libtunepimp2c2a 0.3.0-9.1ubuntu3.1quinn1 libxfixes3 1:4.0-0ubuntu1 libxcomposite1 1:0.3-0ubuntu1 libxss1 1:1.1-0ubuntu1 mesa-utils 6.5.1+cvs20060824 poppler-utils 0.5.3-0ubuntu1 -- OpenGL viewport cut-off with 915gm graphics https://launchpad.net/bugs/43052 -- kubuntu-bugs mailing list kubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/kubuntu-bugs
