https://bugs.freedesktop.org/show_bug.cgi?id=58776
--- Comment #7 from gabriele balducci <[email protected]> --- Thanks a lot. 1) I cannot find (or I am not able to recognize) any option related to AGP/IOMMU in my BIOS menu. Following advice in http://www.kernel.org/doc/Documentation/x86/x86_64/boot-options.txt, I have booted with iommu=soft, which apparently makes the IOMMU complaint go away from demsg, but I don't know if this is really a solution... In any case, booting with (only) iommu=soft, does not make any difference: i.e. the machine freezes as above 2) The nouveau.vram_pushbuf=1 option allows me to boot fine (with or without the iommu=soft option above)! However, now X11 has problems. After starting X11, text in menus (e.g. emacs, firefox) and in window borders is made of unreadable black rectangles; text in windows (e.g. xterm text lines, text in emacs buffers etc) are fine, though. This problem goes away if I boot into X11 with Option "Accel" "Off" i.e.: if I switch acceleration off, everything works nicely (but, of course, I have no acceleration) I have attached dmesg for kernel 3.6.10 (which works perfectly), the new dmesg for kernel 3.7.1 with iommu=soft and nouveau.vram_pushbuf=1, my xorg.conf and xorg.0.log for kernel 3.6.10 and 3.7.1 (with/without accel) I'll be happy to send any other information which might help to clarify this problem thank you very much again ciao gabriele -- You are receiving this mail because: You are the assignee for the bug.
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