Created attachment 128650 [details]
Extract from journalctl showing Dec 24

I have added two files from journalctl. The one from December 23 shows several attempts to boot. It takes several attempts to boot.

The file from December 24 shows similar problems at boot but also lock up during active session at 13:55:32

Created attachment 128651 [details]
Extract from journalctl - lock up while browsing

Had a new lock up while browsing the web - see attached extract from journalctl

Any chance you can bisect Mesa?

Please fix this bloody bug. I have AMD Radeon 5670 graphic card. I have this bug on Ubuntu 16.10 x64 and i have it on Ubuntu 17.04 x64 development version. Now any fresh Linux version is almost unusable for me.

Somebody who can reproduce this needs to bisect it.

@Michel Dänzer, can you tell in details what i should do to send you details report about this bug? I do everything, just tell. I so disappointed, i silently waited and though this bugs will be fixed very soon. And i first time meet it in development version of Ubuntu 17.04 and i though it is because just beta version.

Ok, i tried this on Debian Stretch development branch, and have no hangs. Tested even in heavy video games. Debian have 13.0.5 version of mesa. But Chromium with enabled hardware acceleration still hangs whole system after 5 min.

It wouldn't hurt if you could confirm whether downgrading to mesa 12 actually makes the issue disappear or not. 

For as much, imo, locks are more likely to do with something in kernel. Stretch has 4.9.. Perhaps you could try one of the latest 4.12rcs I guess?

Hey @Michel, I'll chime in. I've had Radeon HD 7870 for several years now. "ring 0/3 stalled for more than 10000+msecs" was my worst nightmare for quite some time (see https://bugs.freedesktop.org/show_bug.cgi?id=65963).

Some Mesa versions were totally broken because of this happening way too often (as in #65963). Most Mesa versions were good, as in: it doesn't happen *that* often but still happens (e.g. every month or so). Such a low occurrence rate of the error makes debugging or bisecting not possible, thus it's not even worth reporting it here and taking Michel's or Alex's time. But yet - yes, it does happen every once in a while.

Over the years, here's what I found to be a factor in ring 0/3 stalling, and by a "factor", I mean something that makes this problem happen a little more often than normally but still beyond reproducibility.

1. radeon.dpm=1
2. switching screens (CTRL+ALT+F1..F7)

Hope this helps, somehow.

Just for the record - Mesa 17.1.4-1 and Linux 4.11.9-1-ARCH stalled on me today. But I know the next time it'll stall again will be a different Mesa & Linux version as I've been using Mesa 17.1.x and Linux 4.11.x for more than a month and it's the first time it's happened.

I have been meaning to update this bug report for a long time but I have been having difficulty getting back to a stable system with the right combination of kernel, mesa & xorg-x11-drv-ati. Downgrading mesa makes no difference. I suspect the problem is something in the kernel

This bug is severe for me, leaving my system almost unusuable. GPU lockup can happen anywhere from turning on the laptop to just before I get to gdm to log in. If I manage to log in the session might only last a few minutes. A long lasting session is a rarity

A hard reboot is necessary. Often when I turn back on the system it just goes straight away to a black screen. It doesn't even go the the Dell boot menu that gives the bios options etc. The card would seem to be alive. Sometimes in this situation I get a beeping sound from the hardware.

However right now I seem to have hit a sweetspot with the following:
kernel-4.12.8-300.fc26
mesa-17.1.7-1.fc26
xorg-x11-drv-ati-7.9.0-1.fc26

I get long sessions lasting possibly hours without lockup. I still do have some problems:

1: Even after a long session without a lockup if I shutdown the laptop normally and try to boot it a few hours later it just goes straight away to a black screen. It doesn't even go the the Dell boot menu that gives the bios options etc. 
2:There are still the odd random lockup giving all the problems above

Should I change tack & report a bug relating to the kernel instead?

(In reply to johnrory.odwyer from comment #12)
> Often when I turn back on the system it just goes straight away to a black
> screen. It doesn't even go the the Dell boot menu that gives the bios options
> etc. The card would seem to be alive. Sometimes in this situation I get a
> beeping sound from the hardware.

That sounds like a hardware / BIOS issue. That's before the Linux kernel is even loaded.

Michel, it's always been in the back of my mind that this was a hardware issue because I couldn't get back to a stable system, no-one with similar hardware has reported this exact issue and finally I just re-installed Windows 7 and I am having all the same problems. This bug report can be closed