[Bug 82880] [BYT dsi] Black screen on modesetting with Dell Venue 8 Pro (older firmware) on 3.16.x

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82880

--- Comment #31 from bs666_1 at hotmail.com ---
I can't really be certain the GPU was idle as the screen was blank but the
values were stable and I'm fairly sure it was at a fbcon vt.

$ sudo ./intel_reg read punit:0xd3 punit:0xd4 punit:0xd8 nc:0x1c nc:0x30
nc:0x34 --spec=registers
        punit:0x000000d3 (0x04:0x000000d3): 0x000000bf
        punit:0x000000d4 (0x04:0x000000d4): 0x000000bf
        punit:0x000000d8 (0x04:0x000000d8): 0x0000c0d0
           nc:0x0000001c (0x11:0x0000001c): 0xbbfe36b4
           nc:0x00000030 (0x11:0x00000030): 0xb378ad39
           nc:0x00000034 (0x11:0x00000034): 0xfc0eb636
$ sudo grep . /sys/class/drm/card0/gt_*
/sys/class/drm/card0/gt_act_freq_mhz:187
/sys/class/drm/card0/gt_cur_freq_mhz:167
/sys/class/drm/card0/gt_max_freq_mhz:645
/sys/class/drm/card0/gt_min_freq_mhz:167
/sys/class/drm/card0/gt_RP0_freq_mhz:645
/sys/class/drm/card0/gt_RP1_freq_mhz:312
/sys/class/drm/card0/gt_RPn_freq_mhz:167

-- 
You are receiving this mail because:
You are the assignee for the bug.
You are on the CC list for the bug.
You are the QA Contact for the bug.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.freedesktop.org/archives/intel-gfx-bugs/attachments/20160518/ce681f8c/attachment.html>