[Intel-gfx] Black screen with git head of intel driver and libdrm 2.4.2

[Lukas Hejtmanek]

Hello,

I wanted to check git head of the intel driver, I have libdrm 2.4.1 in my
ubuntu distro, so I upgraded to 2.4.2 from git head of drm. I'm using X server
1.5.3. Running the server with this stuff, I got only black screen, no errors,
the log ends with:
(II) intel(0): 0x027b8000-0x027c1fff: HW cursors (40 kB)
(II) intel(0): 0x0d78b000:            end of memory manager
(WW) intel(0): PRB0_CTL (0x0001f001) indicates ring buffer enabled
(WW) intel(0): Existing errors found in hardware state.
(II) intel(0): using SSC reference clock of 100 MHz
(II) intel(0): Selecting standard 18 bit TMDS pixel format.
(II) intel(0): Output configuration:
(II) intel(0):   Pipe A is off
(II) intel(0):   Display plane A is now disabled and connected to pipe A.
(II) intel(0):   Pipe B is on
(II) intel(0):   Display plane B is now enabled and connected to pipe B.
(II) intel(0):   Output VGA is connected to pipe none
(II) intel(0):   Output LVDS is connected to pipe B
(II) intel(0):   Output TMDS-1 is connected to pipe none
(II) intel(0): [drm] mapped front buffer at 0xe2800000, handle = 0xe2800000
(II) intel(0): [drm] mapped back buffer at 0xe179f000, handle = 0xe179f000
(II) intel(0): [drm] mapped depth buffer at 0xe079f000, handle = 0xe079f000

Any clues?


-- 
Lukáš Hejtmánek