<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [BYT dsi] Black screen on modesetting with Dell Venue 8 Pro (older firmware) on 3.16.x" href="https://bugs.freedesktop.org/show_bug.cgi?id=82880#c32">Comment # 32</a> on <a class="bz_bug_link bz_status_NEEDINFO " title="NEEDINFO - [BYT dsi] Black screen on modesetting with Dell Venue 8 Pro (older firmware) on 3.16.x" href="https://bugs.freedesktop.org/show_bug.cgi?id=82880">bug 82880</a> from <a class="email" href="mailto:ville.syrjala@linux.intel.com" title="Ville Syrjala <ville.syrjala@linux.intel.com>"> Ville Syrjala</a> <pre>(In reply to bs666_1 from <a href="show_bug.cgi?id=82880#c31">comment #31</a>) > 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 I take it that was with 4.4 or earlier kernel? Anyway, based on those the register values it does look like our current code is in fact correct also for the cz=333 case.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> <li>You are on the CC list for the bug.</li> </ul> </body> </html>