** Changed in: linux (Ubuntu)
Assignee: Rahul (rahulshantagiri) => (unassigned)
** Changed in: linux (Ubuntu)
Status: In Progress => Confirmed
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This may be related to the ticket #1507150 (
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1507150 ) .
Both tickets have the following in common :
1. radeon.dpm=1
2. Radeon Mobile 3650
3. Lockup with dmesg that mentions 'stalling' and 'rings'
4. Both using open source radeon driver.
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** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Rahul (rahulshantagiri)
** Changed in: linux (Ubuntu)
Status: Confirmed => In Progress
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RE: previous comment - my cables are connected and screwed in tightly.
I often switch the monitors off when leaving at night. 99% of the time
the machine is left running and has no problems.
Sometimes, however, like again today, the X-Server HANGs !!
:
$ gdb /usr/bin/Xorg 1855
GNU gdb (GDB)
I encountered the same issue just a moment ago.The possible reason i
think is that the monitor was not connected to computer well while it
booted with no problem.This reason may lead to crash frequently.
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It just happened again , with 3.13.0-46-lowlatency #79
1:7.7+1ubuntu8.1 :
Radeon CP lockup stall dmesg :
[393791.346730] radeon :01:00.0: GPU lockup CP stall for more than 1msec
[393791.346741] radeon :01:00.0: GPU lockup (waiting for 0x0004
last fence id
It just happened again, this time with latest 3.13.0-46-lowlatency kernel and
1:7.7+1ubuntu8.1 .
The messages are slightly different :
quote
code
[78988.537888] radeon :01:00.0: GPU lockup CP stall for more than 1msec
[78988.537900] radeon :01:00.0: GPU lockup (waiting for
That last comment was from last week - I still had it in my firefox
Restore Session and had not pressed Post Comment yet.
But it just happened again today - it looks like the frequency of this bug is
increasing with newer kernel, xorg-server, and
xorg-drivers-radeon releases .
Here is the
It just happened again, this time with latest 3.13.0-46-lowlatency kernel and
1:7.7+1ubuntu8.1 .
The messages are slightly different :
quote
code
[78988.537888] radeon :01:00.0: GPU lockup CP stall for more than 1msec
[78988.537900] radeon :01:00.0: GPU lockup (waiting for
I've been seeing this problem also, abeit rather infrequently ( about once
every 1-2 months),
with all Ubuntu 14.04.1 kernels issued via updates since July 2014 .
This is on my machine at work which is left on all the time and only
reboots when a new kernel is installed .
Machine:
8 core
lscpi -vvv of my development machine
** Attachment added: lcpci -vvv
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1409393/+attachment/4297747/+files/lspci_g1dev-vvv.txt
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lshw of my development machine.
I'll test with my laptop with the mainline kernel later today.
** Attachment added: lshw of g1dev
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1409393/+attachment/4297746/+files/lshw_g1dev.txt
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These GPU lockups are now happening on two machines of mine.
I tested the mainline kernel on my development machine and the problem
is worse not better.
kat@g1dev:~$ uname -a
Linux g1dev 3.19.0-031900rc4-generic #201501112135 SMP Sun Jan 11 21:36:48 UTC
2015 x86_64 x86_64 x86_64 GNU/Linux
On
So I've tried the mainline kernel
kat@korat:~$ uname -a
Linux korat 3.19.0-031900rc4-generic #201501112135 SMP Sun Jan 11 21:36:48 UTC
2015 x86_64 x86_64 x86_64 GNU/Linux
On my laptop and tried all the steps before to try and reproduce the lockup.
MySQL workbench
Google Chrome
Fast switching
Did this issue start happening after an update/upgrade? Was there a
prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer
to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest
v3.19
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