Bug 92251
| Summary: | [byt dsi] Video blanks out after KMS switch | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | joshas |
| Component: | Video(DRI - Intel) | Assignee: | intel-gfx-bugs (intel-gfx-bugs) |
| Status: | RESOLVED OBSOLETE | ||
| Severity: | normal | CC: | intel-gfx-bugs, joshas |
| Priority: | P3 | ||
| Hardware: | Intel | ||
| OS: | Linux | ||
| Kernel Version: | 3.18.4 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: | failed boot up log | ||
DSI display. Please try drm-intel-nightly branch of http://cgit.freedesktop.org/drm-intel Long time no updates, closing. If the problem persists with latest kernels, please file a bug at the freedesktop.org bugzilla [1], referencing this bug. Thank you. [1] https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel |
Created attachment 165081 [details] failed boot up log Lenovo Miix 2 8 tablet with Intel Atom Z3740 CPU (Bay Trail). During boot screen blinks and stays blank. Last seen message on screen is: "fb: switching to inteldrmfb from EFI VGA". In very rare cases display comes back and boots up successfully, but I was not able to find what causes successful boot. Looks like it happens at random, as booting second time with same conditions doesn't result in successful boot. With nomodeset kernel parameter device boots up correctly, but without hardware acceleration. I've attached dmesg log generated with drm.debug=14 parameter of failed boot.