<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [NV4C] GPU lock-up after booting to desktop in Fedora 20 & 21 (Nvidia Geforce 6100 IGP)" href="https://bugs.freedesktop.org/show_bug.cgi?id=87361#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [NV4C] GPU lock-up after booting to desktop in Fedora 20 & 21 (Nvidia Geforce 6100 IGP)" href="https://bugs.freedesktop.org/show_bug.cgi?id=87361">bug 87361</a> from <a class="email" href="mailto:imirkin@alum.mit.edu" title="Ilia Mirkin <imirkin@alum.mit.edu>"> Ilia Mirkin</a> <pre>We did make some wild assumptions that nv4c msi worked like nv4e msi. Perhaps they were unwarranted. Could you change drivers/gpu/drm/nouveau/core/engine/device/nv40.c to have device->oclass[NVDEV_SUBDEV_MC ] = nv44_mc_oclass instead of nv4c_mc_oclass for the 0x4c case? (and remove NvMSI=0 from your boot) BTW, to answer some questions from the IRC log: <4>[ 1.628331] nouveau W[ DRM] DCB type 4 not known <4>[ 1.628335] nouveau W[ DRM] Unknown-1 has no encoders, removing This is just the DVI connector on your motherboard which is implemented as an external encoder. nouveau doesn't support that, there's a bug open about it. <3>[ 25.103513] nouveau E[ PBUS][0000:00:0d.0] MMIO write of 0x01000001 FAULT at 0x00b000 And the others -- these come from VPE, I have no idea how they happen since I'm sure you're not even using VPE. But I've seen them on a bunch of people's boot logs and they appear harmless. If you wanted to disable VPE, you'd boot with nouveau.config=PMPEG=0. However it's unlikely to have any effect. PVP=0 should have had literally 0 effect since you don't have a (functioning) VP engine on those boards (you have VP1, but it's wholly unsupported by nouveau).</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>