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From: bugzilla-daemon@bugzilla.kernel.org
To: dri-devel@lists.freedesktop.org
Subject: [Bug 64891] [snd_hda_codec] BUG: soft lockup - CPU#0 stuck for 22s (when using vgaswitcheroo)
Date: Tue, 30 Jun 2015 22:15:36 +0000	[thread overview]
Message-ID: <bug-64891-2300-9XLa7pODwM@https.bugzilla.kernel.org/> (raw)
In-Reply-To: <bug-64891-2300@https.bugzilla.kernel.org/>

https://bugzilla.kernel.org/show_bug.cgi?id=64891

Tommaso Falchi Delitala <volalto86@gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |volalto86@gmail.com

--- Comment #46 from Tommaso Falchi Delitala <volalto86@gmail.com> ---
Created attachment 181501
  --> https://bugzilla.kernel.org/attachment.cgi?id=181501&action=edit
dmesg showing lockpuos (radeon off)

I still experience lockups related to audio with discrete card disabled via
vgaswitcheroo. Moreover the systems hangs at shutdown.

Kernel 4.0.6-1-ARCH
AMD Mobility Radeon HD5470 + intel integrated.


# cat /sys/kernel/debug/vgaswitcheroo/switch 
0:IGD:+:Pwr:0000:00:02.0
1:DIS: :DynOff:0000:01:00.0
2:DIS-Audio: :Off:0000:01:00.1

Interesting dmesg print:

snd_hda_intel 0000:01:00.1: Disabling via VGA-switcheroo
snd_hda_intel 0000:01:00.1: Cannot lock devices!
INFO: task kworker/u16:0:6 blocked for more than 120 seconds.
      Tainted: G        W       4.0.6-1-ARCH #1
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
kworker/u16:0   D ffff880132fd7ca8     0     6      2 0x00000000
Workqueue: hd-audio1 hdmi_repoll_eld [snd_hda_codec_hdmi]


See complete dmesg in attachment.

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      parent reply	other threads:[~2015-06-30 22:15 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <bug-64891-2300@https.bugzilla.kernel.org/>
2013-12-13 11:54 ` [Bug 64891] [snd_hda_codec] BUG: soft lockup - CPU#0 stuck for 22s (when using vgaswitcheroo) bugzilla-daemon
2013-12-13 14:19 ` bugzilla-daemon
2013-12-13 14:29 ` bugzilla-daemon
2013-12-26 20:01 ` bugzilla-daemon
2013-12-27 22:22 ` bugzilla-daemon
2013-12-27 22:32 ` bugzilla-daemon
2013-12-28 15:12 ` bugzilla-daemon
2013-12-28 15:22 ` bugzilla-daemon
2013-12-28 15:36 ` bugzilla-daemon
2013-12-28 21:10 ` bugzilla-daemon
2013-12-28 21:13 ` bugzilla-daemon
2013-12-28 22:03 ` bugzilla-daemon
2013-12-28 23:16 ` bugzilla-daemon
2013-12-29 15:10 ` bugzilla-daemon
2013-12-29 21:12 ` bugzilla-daemon
2013-12-30 22:50 ` bugzilla-daemon
2013-12-30 23:59 ` bugzilla-daemon
2013-12-31  0:07 ` bugzilla-daemon
2013-12-31  0:09 ` bugzilla-daemon
2013-12-31  0:20 ` bugzilla-daemon
2013-12-31  0:49 ` bugzilla-daemon
2013-12-31  1:05 ` bugzilla-daemon
2013-12-31  1:06 ` bugzilla-daemon
2013-12-31  1:18 ` bugzilla-daemon
2013-12-31  1:50 ` bugzilla-daemon
2013-12-31  1:58 ` bugzilla-daemon
2013-12-31 12:49 ` bugzilla-daemon
2013-12-31 20:55 ` bugzilla-daemon
2013-12-31 21:02 ` bugzilla-daemon
2014-01-02 22:19 ` bugzilla-daemon
2014-02-15 13:04 ` bugzilla-daemon
2015-06-30 22:15 ` bugzilla-daemon [this message]

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