https://bugs.freedesktop.org/show_bug.cgi?id=27501 --- Comment #37 from Joanand --- Hi Pierre, Both patches seems to work (tested 1x on 3.17.rc6). Xorg-x11 starts with fluxbox, messages show that 9600 is unacclerated and 9400 is acclerated. There is are two errors in your patch "option for disabling accleration for given chipset": * The entries DRM_DEBUG_DRIVER are not available on 3.17.rc6, but it works either way. * In the kernel < 3.17 it should be "if (nouveau_noaccel || !nouveau_fifo(device) /*XXX*/)" not only "if (nouveau_noaccel)" Terminating xorg-x11 crashed, probably because I switched off discrete graphichs adapter after starting xorg. Someone else should check. Further testing is in queue. The previous patch you have sent: It solved a problem I had in the past: System kernel panics if the lid is closed during startup! Thanks. Do you think that acceleration for 9600M will be possible sometime? BR. (In reply to comment #36) > This is the minimalistic version of the previous patch. -- You are receiving this mail because: You are the assignee for the bug.