Hello again! Thanks!! > >> 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? No, crashing after startup. Fresh boot and fresh login. Hibernate has been very iffy on this machine. Sometimes comes up, more often not, sometimes with the Message from syslogd kernel:do_IRQ: 0.81 No irq handler for vector (irq -1) > 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. Sure, it is in the systemwide /etc/xdg/openbox/autostart file which gets invoked when I log in (to openbox). > > > > >> 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. Thanks! This is helpful. I will do this. > > > > 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, So, I don't quite understand. How did I get this file? I downloadded firefox from the Fedora repositories. It is on /usr/lib64/firefox/libmozalloc.so which I presume came in from the repos. Not sure I understand how this can get corrupted. > 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. I did this. Got a Pass on 8 stages with no errors detected. Hopefully that is reliable. Thanks again! Best wishes, Ranjan -- Important Notice: This mailbox is ignored: e-mails are set to be deleted on receipt. Please respond to the mailing list if appropriate. For those needing to send personal or professional e-mail, please use appropriate addresses. ____________________________________________________________ Can't remember your password? Do you need a strong and secure password? Use Password manager! It stores your passwords & protects your account. Check it out at http://mysecurelogon.com/manager -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
