Created attachment 134748 [details] Normal boot log with debug information Device: Dell Venue 8 Pro (5830) OS: Fedora 27 Kernel: 4.13.3-300.fc27.x86_64 Descripton: Blackscreen with working backlight kicks in during kernel startup (after i915 take over). A startup with i915.fastboot=1 works, but drops image as soon as screen is rotated. I'm attaching two log files, one with a normal startup and one with fastboot enabled. Both have drm.debug=0xe enabled.
Created attachment 134749 [details] Fastboot boot log with debug information
From dmesg: [drm:pipe_config_err [i915]] mismatch in base.adjusted_mode.crtc_hdisplay (expected 0, found 800) [drm:pipe_config_err [i915]] mismatch in base.adjusted_mode.crtc_htotal (expected 0, found 914) [drm:pipe_config_err [i915]] mismatch in base.adjusted_mode.crtc_hblank_start (expected 0, found 800) [drm:pipe_config_err [i915]] mismatch in base.adjusted_mode.crtc_hblank_end (expected 0, found 914) [drm:pipe_config_err [i915]] mismatch in base.adjusted_mode.crtc_hsync_start (expected 0, found 840) [drm:pipe_config_err [i915]] mismatch in base.adjusted_mode.crtc_hsync_end (expected 0, found 844) [drm:pipe_config_err [i915]] mismatch in base.adjusted_mode.crtc_vdisplay (expected 0, found 1280) [drm:pipe_config_err [i915]] mismatch in base.adjusted_mode.crtc_vtotal (expected 0, found 1474) [drm:pipe_config_err [i915]] mismatch in base.adjusted_mode.crtc_vblank_start (expected 0, found 1280) [drm:pipe_config_err [i915]] mismatch in base.adjusted_mode.crtc_vblank_end (expected 0, found 1474) [drm:pipe_config_err [i915]] mismatch in base.adjusted_mode.crtc_vsync_start (expected 0, found 1290) [drm:pipe_config_err [i915]] mismatch in base.adjusted_mode.crtc_vsync_end (expected 0, found 1294) [drm:pipe_config_err [i915]] mismatch in base.adjusted_mode.crtc_clock (expected 0, found 80840) Is it possible for you to try with drm-tip branch? Thanks.
(In reply to Elizabeth from comment #2) > From dmesg... Not sure if that is relevant.
Raising priority due to 'blackscreen issue'.
Created attachment 134828 [details] Normal boot log with debug information (drm-tip)
Created attachment 134829 [details] Fastboot boot log with debug information (drm-tip)
Added traces with drm-tip branch.
Did you try the kernel config options from bug 96571?
Yes sure, it is the same.
First of all. Sorry about spam. This is mass update for our bugs. Sorry if you feel this annoying but with this trying to understand if bug still valid or not. If bug investigation still in progress, please ignore this and I apologize! If you think this is not anymore valid, please comment to the bug that can be closed. If you haven't tested with our latest pre-upstream tree(drm-tip), can you do that also to see if issue is valid there still and if you cannot see issue there, please comment to the bug.
Closing, please re-open is issue still exists.
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