On 10/18/2014 03:57 PM, Ranjan Maitra wrote:
On Sat, 18 Oct 2014 14:41:32 -0600 jd1008 <jd1008@xxxxxxxxx> wrote:
On 10/17/2014 09:52 PM, Ranjan Maitra wrote:
On Sat, 18 Oct 2014 11:35:18 +0800 Ed Greshko <ed.greshko@xxxxxxxxxxx> wrote:
Well, I'm using kdm and when I select openbox I don't actually have a "system tray". But, I'm not an "openbox" user. I've tried to reproduce your problem with xfce and lxde in a VM but was unable to reproduce the problem.
OK......
I used lxpanel to get a "system tray". I get the same "warning" message that you do when I place the mouse over the pnmixer. However, I don't get any crash.
Thanks! Let me explain: I get a crash when I log in for the first time. In this case, it is autostarted (at the system level). When I use this as a user from the commandline, it does not crash: however, upon wakeup from hibernate it does crash.
I have this problem with my Dell Precision M3800 laptop.
Funnily enough I do not have an issue with my Dell XPS 13 or Dell E6400 laptops or my Dell Precision T7400 workstation (which of course is never hibernated).
The setup is the same for all machines (and in particular identical for all three laptops)!
Many thanks again!
Best wishes,
Ranjan
OK, so my understanding is that you start pnmixer, and it starts fine,
then you hibernate, and then you reboot to resume from hibernation,
and THAT is when the crash occurs.
Is this basically correct?
Basically, correct, except that pnmixer itself crashes when started at login (upon a first boot). However, when started later on (from the commandline, but I am not sure that this has anything to do with it), it does not crash but gives that error message, which I do not know how to handle and works normally.
When you say crashes upon startup, do you mean resumption after hibernation.
or do you mean after a fresh bootup and fresh login?
If the crash is occurring after a fresh bootup and login (i.e., not
system resumption
after a hibernation, then how is pnmixer getting started at time of
fresh login and
immediately crashing? Are you starting it from your .bashrc or .bash-profile
or some such startup file?
I am asking just to get this clarification.
If so, how can we deduce that the system crash is being caused by pnmixer?
We can not. It is just that pnmixer crashes upon login and first boot and there was an error message in the dmesg (some days ago) so that made me wonder.
You need to boot a kernel that enables the saving of the system crashdump
and upload it to the redhat's bugzilla.redhat.com so that the cause of
the system
crash can be identified.
How do I get such a kernel?
sudo yum -y install system-config-kdump kexec-tools
Next, you need to modify /boot/grub2/grub.cfg and add a boot param
to the line
linux /boot/vmlinuz-3.16.4-200.fc20.x86_64
root=UUID=fba3bf99-7948-45c5-83af-627c6e6b8b2a ro vconsole.font=lat
arcyrheb-sun16 LANG=en_US.UTF-8
Read the document:
https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/pdf/Kernel_Crash_Dump_Guide/Red_Hat_Enterprise_Linux-7-Kernel_Crash_Dump_Guide-en-US.pdf
which has a section explaining what params to add to that line, and how
to configure
/etc/kdump.conf ...etc .... etc
It is an excellent document which has much more to say than I can
summarize here.
Btw, I am also getting, occassionally the following in my dmesg:
[30472.635743] Browser[14212]: segfault at 0 ip 00007fc6a88f2445 sp 00007fffbecd1290 error 6 in libmozalloc.so[7fc6a88f1000+2000]
What exactly does this mean? Is this serious? I am at firefox-33.0-1.fc20.x86_64 but the phenomenon was also there before the firefox update.
It simply could mean that you might have either
1. A corrupted libmozalloc.so file,
or
2. You have bad ram.
Why don't you:
sudo yum -y install memtest86+
and after it gets installed, run
sudo /usr/sbin/memtest-setup
and this will allow you to boot into the standalone memory test
which will likely run for a couple of hours or more and will find
memory errors.
Thanks again!
Best wishes,
Ranjan
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