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Old 10-09-2017, 11:22 AM   #1
mfoley
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Slackware workstation intermittently crashing


I have been having intermittant but frequent crashes on a Slackware64 14.2 KDE workstation. This is one of several workstations in the office and is the newest hardware. There are also 4 other Slacware servers (no KDE). This one computer is the only one crashing. It has simply halted 6 time since August 15, including twice today (it was built about August 12th). The major difference from the other workstations is that it has an AMD Ryzen processor.

I've post the relevant parts of syslog below. In both cases, the last thing to run before the restart was Successfully activated service 'org.kde.powerdevil.backlighthelper. Is there any known problem with this?

Also, this computer was upgraded to Ryzen on August 12th (1st crash 3 days later), but had been running with an Intel Pentium G630 for weeks prior to that w/o any crashes at all.

Ideas?

syslog has the following entries:
First event today
Code:
Oct  9 09:29:22 dennis -- MARK --
Oct  9 09:32:21 dennis rpcbind[2184]: connect from 127.0.0.1 to getport/addr(status)
Oct  9 09:32:22 dennis rpcbind[2189]: connect from 127.0.0.1 to getport/addr(status)
Oct  9 09:32:40 dennis dbus[1243]: [system] Activating service name='org.freedesktop.UPower' (using servicehelper)
Oct  9 09:32:40 dennis dbus[1243]: [system] Successfully activated service 'org.freedesktop.UPower'
Oct  9 09:32:41 dennis dbus[1243]: [system] Activating service name='org.freedesktop.UDisks2' (using servicehelper)
Oct  9 09:32:41 dennis udisksd[2373]: udisks daemon version 2.1.5 starting
Oct  9 09:32:41 dennis dbus[1243]: [system] Successfully activated service 'org.freedesktop.UDisks2'
Oct  9 09:32:41 dennis udisksd[2373]: Acquired the name org.freedesktop.UDisks2 on the system message bus
Oct  9 09:32:41 dennis rpcbind[2382]: connect from 127.0.0.1 to getport/addr(status)
Oct  9 09:32:42 dennis dbus[1243]: [system] Activating service name='org.kde.powerdevil.backlighthelper' (using servicehelper)
Oct  9 09:32:42 dennis dbus[1243]: [system] Successfully activated service 'org.kde.powerdevil.backlighthelper'
Oct  9 09:49:22 dennis -- MARK --
Oct  9 10:09:22 dennis -- MARK --
Oct  9 10:29:22 dennis -- MARK --
Oct  9 10:47:57 dennis syslogd 1.5.1: restart.
2nd event today
Code:
Oct  9 10:48:16 dennis apcupsd[1444]: NIS server startup succeeded
Oct  9 10:48:16 dennis kernel: [   35.894724] ip_tables: (C) 2000-2006 Netfilter Core Team
Oct  9 10:48:17 dennis kernel: [   36.372288] nf_conntrack version 0.5.0 (65536 buckets, 262144 max)
Oct  9 10:48:18 dennis rpcbind[1588]: connect from 127.0.0.1 to getport/addr(status)
Oct  9 10:48:18 dennis rpcbind[1605]: connect from 127.0.0.1 to getport/addr(status) 
Oct  9 10:48:18 dennis acpid: client connected from 1548[0:0]
Oct  9 10:48:18 dennis acpid: 1 client rule loaded
Oct  9 10:48:49 dennis dbus[1246]: [system] Activating service name='org.freedesktop.UPower' (using servicehelper) 
Oct  9 10:48:49 dennis dbus[1246]: [system] Successfully activated service 'org.freedesktop.UPower'
Oct  9 10:48:50 dennis dbus[1246]: [system] Activating service name='org.freedesktop.UDisks2' (using servicehelper)
Oct  9 10:48:50 dennis udisksd[1969]: udisks daemon version 2.1.5 starting
Oct  9 10:48:50 dennis dbus[1246]: [system] Successfully activated service 'org.freedesktop.UDisks2'
Oct  9 10:48:50 dennis udisksd[1969]: Acquired the name org.freedesktop.UDisks2 on the system message bus
Oct  9 10:48:50 dennis rpcbind[1998]: connect from 127.0.0.1 to getport/addr(status)
Oct  9 10:48:50 dennis dbus[1246]: [system] Activating service name='org.kde.powerdevil.backlighthelper' (using servicehelper)
Oct  9 10:48:51 dennis dbus[1246]: [system] Successfully activated service 'org.kde.powerdevil.backlighthelper'
Oct  9 10:52:01 dennis sshd[2490]: Accepted password for hprsadmin from 192.168.0.3 port 53872 ssh2
Oct  9 10:59:20 dennis syslogd 1.5.1: restart.
Oct  9 10:59:20 dennis kernel: klogd 1.5.1, log source = /proc/kmsg started.

Last edited by mfoley; 10-09-2017 at 11:39 AM.
 
Old 10-09-2017, 12:29 PM   #2
RadicalDreamer
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I dunno but there have been media reports regarding Ryzen CPUs being RMA'd due to instability on Linux: https://duckduckgo.com/?q=ryzen+linu...&t=ffnt&ia=web

What Linux kernel are you using? You might want to try a newer one.
 
Old 10-09-2017, 02:57 PM   #3
mfoley
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Quote:
Originally Posted by RadicalDreamer View Post
I dunno but there have been media reports regarding Ryzen CPUs being RMA'd due to instability on Linux: https://duckduckgo.com/?q=ryzen+linu...&t=ffnt&ia=web
Yes, I've found numerous links referring to Ryzen/Linux issues:
https://linux.slashdot.org/story/17/...oblem-on-ryzen

https://hothardware.com/news/amd-con...mt-bug-and-fix

https://liliputing.com/2017/08/amd-r...ads-linux.html

http://techreport.com/news/32362/amd...oblem-on-ryzen
Quote:
What Linux kernel are you using? You might want to try a newer one.
I'm using 4.4.38 which is the latest for Slackware 14.2. Supposedly, 4.10 addresses some of the Ryzen issues, but I am reluctant to go that route as this is one of several production machines that all get automatically updated from slackpkg and I hate to step outside the normal update path. The simple solution might be to get a different processor.

Has anyone else experienced similar problems with the Ryzen processor?

more info:

I've upgraded to kernel 4.4.88 which really *is* the current Slackware version. Probably still won't fix it since I've read in one of those links I posted that 4.10 addresses some Ryzen issues. Slackware probably won't get that version until 14.3, I'll post back with results.

Last edited by mfoley; 10-09-2017 at 09:26 PM.
 
Old 10-10-2017, 12:44 AM   #4
1337_powerslacker
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Quote:
Originally Posted by mfoley View Post
Yes, I've found numerous links referring to Ryzen/Linux issues:
https://linux.slashdot.org/story/17/...oblem-on-ryzen

https://hothardware.com/news/amd-con...mt-bug-and-fix

https://liliputing.com/2017/08/amd-r...ads-linux.html

http://techreport.com/news/32362/amd...oblem-on-ryzen

I'm using 4.4.38 which is the latest for Slackware 14.2. Supposedly, 4.10 addresses some of the Ryzen issues, but I am reluctant to go that route as this is one of several production machines that all get automatically updated from slackpkg and I hate to step outside the normal update path. The simple solution might be to get a different processor.

Has anyone else experienced similar problems with the Ryzen processor?

more info:

I've upgraded to kernel 4.4.88 which really *is* the current Slackware version. Probably still won't fix it since I've read in one of those links I posted that 4.10 addresses some Ryzen issues. Slackware probably won't get that version until 14.3, I'll post back with results.
Have you seen this report by Phoronix? Michael has confirmed the latest revisions of the Ryzen processor have addressed the crashing/segfaulting issue. Looking through your OP, though, it doesn't seem like that would be the source of your problem, although it is within the realm of possibility.

Last edited by 1337_powerslacker; 10-10-2017 at 12:46 AM. Reason: clarity
 
Old 10-10-2017, 02:04 AM   #5
jostber
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Can you check if disabling powerdevil in KDE helps?

https://forum.kde.org/viewtopic.php?f=225&t=127676
 
Old 10-10-2017, 04:40 PM   #6
mfoley
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Quote:
Originally Posted by jostber View Post
Can you check if disabling powerdevil in KDE helps?
Any idea how to do that? None of the screen images I've googled on this topic look anything like my KDE > System Settings > Power Management.
 
Old 10-10-2017, 10:45 PM   #7
jostber
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Quote:
Originally Posted by mfoley View Post
Any idea how to do that? None of the screen images I've googled on this topic look anything like my KDE > System Settings > Power Management.
Go into systemsettings and turn off the KDE power management and check if that affects this.
 
  


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