Bug 207613
| Summary: | Won't boot | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Michael Fox (mfox) |
| Component: | Video(DRI - non Intel) | Assignee: | drivers_video-dri |
| Status: | NEW --- | ||
| Severity: | high | CC: | alexdeucher |
| Priority: | P1 | ||
| Hardware: | x86-64 | ||
| OS: | Linux | ||
| Kernel Version: | 5.7.0.994 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: | dmesg from 5.7.0.994 boot attempt | ||
Did this system ever work? If so when and can you bisect? (In reply to Alex Deucher from comment #1) > Did this system ever work? If so when and can you bisect? Yes, it works well with the 4.15 kernel. And I did bisect to the extent of finding out the point at which the slow boot occurred. You can follow it here: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1874104 In a nutshell, kernels 5.0, 5.1 and 5.2 are fine. The last good (i.e. normal booting) kernel was 5.2.21. Kernel 5.3.rc1 was the first slow booting version. Kernels I tried that are slow booting are 5.3.0, 5.3.1, 5.6, and the 5.6 rc's leading up to 5.7.0.994. I don't think I am technically competent enough to dissect within a kernel. |
Created attachment 288979 [details] dmesg from 5.7.0.994 boot attempt Applies to a 2015 5k iMac 27" with AMD r9390x video card. I was asked to file this as I have been testing 5.3, 5.4, 5.6 and 5.7 kernel, all of which boot very slowly (> 3 minutes to working desktop), and also have delayed wakeup from display sleep (~2 minutes) and delayed shutdown (~ 2 minutes). dmesg and systemd analysis for these boots have been posted in bugs.launchpad.net/bugs/1875211. I have been asked to test several of the 5.7 rc kernels and the latest version (5.7.0.994). Only one of these versions would boot at all (rc3); the other rc kernels would only get as far as the login screen, and 5.7.0.994 wouldn't get even that far. Attached is the dmesg to the 5.7.0.994 boot attempt.