<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [BYT][VLV] No picture on DSI display after DRM loads on Teclast X80H tablet" href="https://bugs.freedesktop.org/show_bug.cgi?id=96996#c3">Comment # 3</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [BYT][VLV] No picture on DSI display after DRM loads on Teclast X80H tablet" href="https://bugs.freedesktop.org/show_bug.cgi?id=96996">bug 96996</a> from <a class="email" href="mailto:laszlo.fiat@gmail.com" title="Laszlo Fiat <laszlo.fiat@gmail.com>"> Laszlo Fiat</a> <pre>Created <a href="attachment.cgi?id=126760" name="attach_126760" title="Dmesg of drm-intel-nightly-2016-09-20">attachment 126760</a> <a href="attachment.cgi?id=126760&action=edit" title="Dmesg of drm-intel-nightly-2016-09-20">[details]</a> Dmesg of drm-intel-nightly-2016-09-20 This is a new dmesg of drm-intel-nightly fetched on 2016-09-20. This time it is without the i915.fastboot=1 parameter. The screen worked with i915.fastboot=1 from Nov 2015 to kernel 4.6.7, but not with newer ones. I made a video of the boot process, but it is really not interesting, the screen goes blank after line "[7.648499] fb: switching to inteldrmfb from simple" There is an WARNING later in the boot log: [ 9.197313] [drm:intel_dsi_enable] [ 9.333433] [drm:vlv_pipe_set_fifo_size] Pipe A FIFO split 511 / 511 / 511 [ 9.333451] [drm:vlv_update_wm] Setting FIFO watermarks - A: plane=461, cursor=63, sprite0=0, sprite1=0, SR: plane=0, cursor=0 level=0 cxsr=0 [ 9.333457] [drm:intel_enable_pipe] enabling pipe A [ 9.333485] [drm:intel_dsi_enable_nop] [ 9.389302] ------------[ cut here ]------------ [ 9.389560] WARNING: CPU: 2 PID: 61 at drivers/gpu/drm/i915/intel_display.c:14144 intel_atomic_commit_tail+0x1075/0x10a0 [i915] [ 9.389564] pipe A vblank wait timed out Could someone please take a look at the log, and tell me what goes wrong?</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>