<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - Crash when creating a depth buffer on GeForce 320M" href="https://bugs.freedesktop.org/show_bug.cgi?id=108500#c9">Comment # 9</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - Crash when creating a depth buffer on GeForce 320M" href="https://bugs.freedesktop.org/show_bug.cgi?id=108500">bug 108500</a> from <a class="email" href="mailto:timo.wiren@gmail.com" title="Timo Wiren <timo.wiren@gmail.com>"> Timo Wiren</a> <pre>(In reply to Ilia Mirkin from <a href="show_bug.cgi?id=108500#c8">comment #8</a>) > Could you edit > drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmnv50.c:nv50_vmm_valid, and change > it to set aper = 0 in the if (ram->stolen) case (so aper=0 in both of the > VRAM cases). I tested it on kernel 4.18.16 and it caused a crash/hang on bootup. Some of the log messages (copied by hand): nouveau 0000:04:00.0: fb: trapped read at 015bc9dedc on channel 2 [0fba0000 DRM] engine 05 [PFIFO] client 08 [PFIFO_READ] subclient 00 [PUSHBUF] reason 0000000b [PT_NOT_PRESENT] nouveau 0000:04:00.0: fifo: DMA_PUSHER - ch 2 [DRM] get 015c25a7a4 put 015c25a7a4 ib_get 000000a2 ib_put 000000a7 state a0000000 (err: IB_EMPTY) nouveau 0000:04:00.0: DRM: GPU lockup - switching to software fbcon nouveau 0000:04:00.0: fb: trapped write at 0100131fc0 on channel -1 [0fedf000 unknown] engine 06 [BAR] client 04 [PFIFO_WRITE] subclient 01 [IN] reason 000000b [VRAM_LIMIT]</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the QA Contact for the bug.</li> <li>You are the assignee for the bug.</li> </ul> </body> </html>