[Bug 76286] New: Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870 - dri-devel - freedesktop.org experimental mailing list

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[Bug 76286] New: Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

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bugzilla-daemon＠freedesktop.org

17 Mar 2014 17 Mar '14

6:32 p.m.

https://bugs.freedesktop.org/show_bug.cgi?id=76286

Priority: medium Bug ID: 76286 Assignee: dri-devel@lists.freedesktop.org Summary: Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870 Severity: major Classification: Unclassified OS: Linux (All) Reporter: OmegaPhil+FreeDesktop.BugTracker@gmail.com Hardware: x86-64 (AMD64) Status: NEW Version: unspecified Component: DRM/Radeon Product: DRI

Created attachment 95961 --> https://bugs.freedesktop.org/attachment.cgi?id=95961&action=edit Kernel log for session with manual radeon module loading with modesetting enabled

Flagged as major as this prevents kernel boot if the user doesnt know how to disable the functionality with the kernel boot parameters.

Originally reported in https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=741619 , Debian kernel v3.13 enables dpm by default - partway through the boot process (when cryptsetup is opening encrypted disks), the kernel hangs (confirmed with no response to ping).

The kernel boots fine with radeon.dpm=0.

Following instructions (https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=741485#10) I booted with radeon.modeset=0, made sure X wasn't running and radeon was unloaded, then modprobe'd radeon modeset=1 - after a small delay everything hung.

I have attached kern.log (REISUB FTW this time it seems?), there is an X log but that simply gave up after finding no modesetting support, before the point where I reloaded radeon.

kern.log is verbose as I always boot with full debugging information, but in this case its useless as nothing appears to be logged associated with the radeon load (and I'm assuming the magic sync worked).

In terms of fighting the issue, I have C and C++ experience but no real kernel debugging EXP and certainly nothing todo with the graphical stack.

===============================

uname -a: Linux omega1 3.13-1-amd64 #1 SMP Debian 3.13.5-1 (2014-03-04) x86_64 GNU/Linux Debian Testing X server: 1.15.0 Radeon: 7.3.0

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bugzilla-daemon＠freedesktop.org

17 Mar 17 Mar

8 p.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

--- Comment #1 from Alex Deucher agd5f@yahoo.com --- Does booting an older kernel (e.g., 3.11 or 3.12) with radeon.dpm=1 work ok? Please attach your dmesg output with kms enabled.

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bugzilla-daemon＠freedesktop.org

9:10 p.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

OmegaPhil+FreeDesktop.BugTracker@gmail.com changed:

--- Comment #2 from OmegaPhil+FreeDesktop.BugTracker@gmail.com --- I tried twice to get at flushed dmesg output for v3.13, both failed - I confirmed the hang happens with v3.12 and v3.11 - looks like REISUB does nothing, no dmesg files were created for the relevant boots...

Shall I set up netconsole and see what I can get?

Just for my education, it looks like dmesg output is part of kern.log (https://stackoverflow.com/a/11413417/1188444) - is this correct?

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bugzilla-daemon＠freedesktop.org

9:13 p.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

--- Comment #3 from Alex Deucher agd5f@yahoo.com --- Yes. dmesg prints out the kernel log for the current boot. Can you attach the log with radeon.dpm=0? The log in comment 0 is with modeset=0.

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bugzilla-daemon＠freedesktop.org

9:18 p.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

--- Comment #4 from OmegaPhil+FreeDesktop.BugTracker@gmail.com --- Created attachment 95969 --> https://bugs.freedesktop.org/attachment.cgi?id=95969&action=edit dmesg from normal v3.13 boot with radeon.dpm=0

Normal boot dmesg attached

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bugzilla-daemon＠freedesktop.org

21 Mar 21 Mar

6:06 a.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

--- Comment #5 from Gregory Land landjgregory@gmail.com --- I am having a similar problem with my 4870. If i disconnect my second monitor I can boot with radeon.dmp = 1. If I reconnect the monitor again it will lock up shortly after boot.

A bisect brings up this commit https://github.com/torvalds/linux/commit/ab70b1dde73ff4525c3cd51090c233482c5... Which makes sense since this commit enabled dpm by default on radeon x7xx series cards.

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bugzilla-daemon＠freedesktop.org

6:21 a.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

--- Comment #6 from Gregory Land landjgregory@gmail.com --- Created attachment 96138 --> https://bugs.freedesktop.org/attachment.cgi?id=96138&action=edit Greg: Log where i managed to get system to boot to terminal session before crash happened.

Log from kernel created from bisected copy of Linus's github on an linux machine. I added a few DRM_INFO() outputs in an attempt to find where the lockup is occurring. From what I can tell the crash is preventing the logs from being written out,

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bugzilla-daemon＠freedesktop.org

6:41 a.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

--- Comment #7 from Gregory Land landjgregory@gmail.com --- Created attachment 96139 --> https://bugs.freedesktop.org/attachment.cgi?id=96139&action=edit Kernel Panic Displayed after waiting out the lockup very rare

If I wait around long enough the system might kernel panic and display a few messages that don't seem to get added to the logs. I have a photo of them taken from my phone to attach.

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bugzilla-daemon＠freedesktop.org

7:13 a.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

--- Comment #8 from Gregory Land landjgregory@gmail.com --- Created attachment 96140 --> https://bugs.freedesktop.org/attachment.cgi?id=96140&action=edit Disabled all but one core and hyper-threading. Helped with log loss

Log with more info. Disabled hyper-threading and all but one core.

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bugzilla-daemon＠freedesktop.org

7:37 a.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

--- Comment #9 from Gregory Land landjgregory@gmail.com --- Created attachment 96141 --> https://bugs.freedesktop.org/attachment.cgi?id=96141&action=edit Image of kernel panic with single core only

Image of kernel panic with single core only

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bugzilla-daemon＠freedesktop.org

2:45 p.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

--- Comment #10 from Alex Deucher agd5f@yahoo.com --- Created attachment 96170 --> https://bugs.freedesktop.org/attachment.cgi?id=96170&action=edit disable some dpm features

Does the attached kernel patch help? If so, can you narrow down what part of it helps?

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bugzilla-daemon＠freedesktop.org

5:48 p.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

--- Comment #11 from Gregory Land landjgregory@gmail.com --- Patch did not resolve the problem.

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bugzilla-daemon＠freedesktop.org

6:11 p.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

--- Comment #12 from Gregory Land landjgregory@gmail.com --- Created attachment 96182 --> https://bugs.freedesktop.org/attachment.cgi?id=96182&action=edit Core Dump at insane logging level.

I enabled every debug line I could find. Got this.

Mar 21 10:00:54 endora systemd[1]: Received SIGCHLD from PID 584 (sd_cicero). Mar 21 10:00:54 endora systemd[1]: Child 584 (sd_cicero) died (code=exited, status=1/FAILURE) Mar 21 10:00:54 endora kernel: [drm:r600_irq_process], r600_irq_process start: rptr 18624, wptr 18640 Mar 21 10:00:54 endora kernel: [drm:drm_calc_vbltimestamp_from_scanoutpos], crtc 1 : v 13 p(521,-40)@ 28.771340 -> 28.771949 [e 0 us, 0 rep] Mar 21 10:00:54 endora kernel: [drm:r600_irq_process], IH: D2 vblank Mar 21 10:00:54 endora kernel: sd_festival[590]: segfault at 2d0 ip 00007fcc15b8d1a1 sp 00007ffff79b0a10 error 4 in libpthread-2.19.so[7fcc15b80000+18000] Mar 21 10:00:54 endora kernel: potentially unexpected fatal signal 11. Mar 21 10:00:54 endora kernel: CPU: 7 PID: 590 Comm: sd_festival Tainted: G I 3.14.0-rc7-ARCH-00059-g08edb33-dirty #1 Mar 21 10:00:54 endora kernel: Hardware name: /DX58SO, BIOS SOX5810J.86A.5600.2013.0729.2250 07/29/2013 Mar 21 10:00:54 endora kernel: task: ffff8801a537cf00 ti: ffff8800c1f2e000 task.ti: ffff8800c1f2e000 Mar 21 10:00:54 endora kernel: RIP: 0033:[<00007fcc15b8d1a1>] [<00007fcc15b8d1a1>] 0x7fcc15b8d1a1 Mar 21 10:00:54 endora kernel: RSP: 002b:00007ffff79b0a10 EFLAGS: 00010206 Mar 21 10:00:54 endora kernel: RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fcc15b7a678 Mar 21 10:00:54 endora kernel: RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 Mar 21 10:00:54 endora kernel: RBP: 00007ffff79b0bb8 R08: 00007fcc15b7a678 R09: 00007fcc15b7a670 Mar 21 10:00:54 endora kernel: R10: 00007ffff79b07e0 R11: 00007fcc15b8d1a0 R12: 0000000000405d6c Mar 21 10:00:54 endora kernel: R13: 00007ffff79b0bb0 R14: 0000000000000000 R15: 0000000000000000 Mar 21 10:00:54 endora kernel: FS: 00007fcc16afe700(0000) GS:ffff8801aece0000(0000) knlGS:0000000000000000 Mar 21 10:00:54 endora kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 Mar 21 10:00:54 endora kernel: CR2: 00000000000002d0 CR3: 00000000c1cf8000 CR4: 00000000000007e0 Mar 21 10:00:54 endora kernel: Mar 21 10:00:54 endora kernel: [drm:r600_irq_process], r600_irq_process start: rptr 18640, wptr 18656 Mar 21 10:00:54 endora kernel: [drm:drm_calc_vbltimestamp_from_scanoutpos], crtc 0 : v 13 p(1866,-47)@ 28.774347 -> 28.775032 [e 0 us, 0 rep] Mar 21 10:00:54 endora kernel: [drm:r600_irq_process], IH: D1 vblank Mar 21 10:00:54 endora systemd-coredump[591]: Process 590 (sd_festival) dumped core.

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bugzilla-daemon＠freedesktop.org

6:32 p.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

--- Comment #13 from Gregory Land landjgregory@gmail.com --- Uninstalled segfalting package - Speech-Dispatcher (part of kde accessability) - Segfault resovled system still locks up with dpm.radeon = 1.

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bugzilla-daemon＠freedesktop.org

29 Mar 29 Mar

9:22 p.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

--- Comment #14 from OmegaPhil+FreeDesktop.BugTracker@gmail.com --- I noticed v3.13.7-1 has come to Debian testing today with the following in the changelog:

- drm/radeon: fix runpm disabling on non-PX harder (may fix #741619, #742507)

I can confirm it doesnt help when I get rid of 'radeon.dpm=0' on boot.

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bugzilla-daemon＠freedesktop.org

22 May 22 May

1:48 p.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

--- Comment #15 from OmegaPhil+FreeDesktop.BugTracker@gmail.com --- This is still a problem with kernel 3.14.4-1.

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bugzilla-daemon＠freedesktop.org

2:02 p.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

--- Comment #16 from Alex Deucher agd5f@yahoo.com --- (In reply to comment #15)

...

This is still a problem with kernel 3.14.4-1.

It's fixed in: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=76... Doesn't look like that has hit 3.14 yet.

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bugzilla-daemon＠freedesktop.org

2:58 p.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

--- Comment #17 from OmegaPhil+FreeDesktop.BugTracker@gmail.com --- Thanks, but thats a workaround, not a fix - is DPM abandoned for these cards?

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bugzilla-daemon＠freedesktop.org

26 May 26 May

7:36 a.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

--- Comment #18 from jyliu monk.liu@amd.com --- Created attachment 99834 --> https://bugs.freedesktop.org/attachment.cgi?id=99834&action=edit fix for 73911

this patch will make a key register's value correct and fix this bug

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bugzilla-daemon＠freedesktop.org

27 May 27 May

7:06 a.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

OmegaPhil+FreeDesktop.BugTracker@gmail.com changed:

--- Comment #19 from OmegaPhil+FreeDesktop.BugTracker@gmail.com --- Comment on attachment 99834 --> https://bugs.freedesktop.org/attachment.cgi?id=99834 fix for 73911

jyliu: You've put the patch on the wrong ticket, this is for DPM on r600g cards.

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bugzilla-daemon＠freedesktop.org

19 Nov 19 Nov

8:46 a.m.

New subject: [Bug 76286] Kernel v3.13 hang during boot now that dpm is enabled for radeon driver - Radeon HD4870

https://bugs.freedesktop.org/show_bug.cgi?id=76286

Martin Peres martin.peres@free.fr changed:

--- Comment #20 from Martin Peres martin.peres@free.fr --- -- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/467.

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bugzilla-daemon＠freedesktop.org