Bug 187601
| Summary: | Screen freezes on boot at "fb: switching to inteldrmfb from VESA VGA | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | A. Budden (pss5uh9t57) |
| Component: | Video(Other) | Assignee: | drivers_video-other |
| Status: | RESOLVED CODE_FIX | ||
| Severity: | normal | CC: | pss5uh9t57 |
| Priority: | P1 | ||
| Hardware: | Intel | ||
| OS: | Linux | ||
| Kernel Version: | 4.8.7 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
As discussed in the newy accepted answer to the askubuntu.com question, this appears to be fixed in the drm-intel nightly build on 2016-10-19 of 4.9.0. For future reference, please file drm/i915 bugs at https://bugs.freedesktop.org/enter_bug.cgi?product=DRI&component=DRM/Intel |
I think this is probably related to #86551, but that issue was fixed in 3.17/3.18 and my issue is still present in 4.8.0, 4.8.6 and 4.8.7. When I recently installed Ubuntu 16.10 on a new machine (ASRock Z170 Gaming-ITX/AC S1151 M-ITX Intel Motherboard with Intel Core Skylake Processor i5-6500/3.2 GHz Processor CPU), I got a blank screen on first boot. Removing "quiet splash" allows it to boot up until the message: fb: switching to inteldrmfb from VESA VGA I can get it to boot with "nomodeset", but then the graphics options are very limited if I start X. Some websites suggest removing the "vga=" bit of my boot line, but I don't have one to remove so I can't do that. There is a full dmesg output for a non-nomodeset (blank screen) boot here: http://pastebin.com/HA8SNQJa and a full dmesg output for a nomodeset boot here: http://pastebin.com/gL5bvSXp (these were captured with 4.8.6, but I've noticed no difference with 4.8.7). There is a lot more information about the various things I have tried (and some configuration files) in this askubuntu.com question (and in one or two of my comments in responses to the answers): http://askubuntu.com/questions/845842/intel-skylake-blank-screen-on-ubuntu-16-10/846865 I can obviously post more information as required.