[Intel-gfx] display problems since: drm/i915/dp: workaround BIOS eDP bpp clamping issue

[Ville Syrjälä]

On Mon, Nov 04, 2013 at 07:32:58PM +0000, Cristian Rodríguez wrote:
> El 04/11/13 18:54, Cristian Rodríguez escribió:
> > El 04/11/13 18:40, Daniel Vetter escribió:
> >
> >> It hangs on a scanline wait. Are you already on the latest version of
> >> xfree86-video-intel and if not can you please check whether it works
> >> on the latest?
> >
> > I am in version 2.99.905 , it does not appear to be a  newer snapshot
> > release.. do you want me to try a git HEAD version instead ?
> >
> >
> >
> Ok, upgraded the userspace driver to current git HEAD (last commit 4 
> hours ago) attached is the latest errors.

0x01870000:      0x11000001: MI_LOAD_REGISTER_IMM
0x01870004:      0x00044050:    dword 1
0x01870008:      0xfffffeff:    dword 2
0x0187000c:      0x11000001: MI_LOAD_REGISTER_IMM
0x01870010:      0x0004f100:    dword 1
0x01870014:      0xe0500410:    dword 2
0x01870018:      0x01800100: MI_WAIT_FOR_EVENT, plane B scan line wait
0x0187001c:      0x11000001: MI_LOAD_REGISTER_IMM
0x01870020:      0x00044050:    dword 1
0x01870024:      0xffffffff:    dword 2

BSpec says LRIs targeting display engine register should be followed
by SRMs. Looks like the ddx doesn't follow that rule. Not sure it
has anything to do with the problem though.

-- 
Ville Syrjälä
Intel OTC