search for: 97620

https://bugs.freedesktop.org/show_bug.cgi?id=97620 Bug ID: 97620 Summary: [REGRESSION] KMS having issues after kernel upgrade (4.5.1-1 to 4.6.4-1) Product: xorg Version: unspecified Hardware: x86-64 (AMD64) OS: Linux (All) Status: NEW S...

Turns out some VBIOSes don't actually set the bit in question in 2240c. Use the nv50-style detection to try avoiding running the vbios twice. Fixes: a6a0f67ca7aa ("drm/nouveau/devinit/gf100-: detect if BIOS invoked devinit") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97620 Cc: stable at vger.kernel.org # v4.6+ Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu> --- Not sure if this is safe to do esp on GM20x+ boards? drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gf100.c | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/drivers/gpu/drm/n...

Turns out some VBIOSes don't actually set the bit in question in 2240c. Use the nv50-style detection to try avoiding running the vbios twice. Fixes: a6a0f67ca7aa ("drm/nouveau/devinit/gf100-: detect if BIOS invoked devinit") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=97620 Cc: <stable at vger.kernel.org> # v4.6+ Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu> --- v1 -> v2: add vga.h include (had it sitting in my local tree but forgot to amend the commit with it) drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gf100.c | 20 ++++++++++++++++++++ 1 fi...

It is not advisable to perform devinit if it has already been done. VBIOS will very likely have invoked devinit if the GPU is the primary graphics device, but there is no accurate way to detect this fact yet. This patch adds such a method for gf100 and later chips, by means of the NV_PTOP_SCRATCH1_DEVINIT_COMPLETED bit. This bit is set to 1 by devinit, and reset to 0 when the GPU is powered.