http://bugzilla.opensuse.org/show_bug.cgi?id=984955 Bug ID: 984955 Summary: System freezes & reboots frequently after applying official patches with upgrades from kernel-default-4.1.13-5.1 to newer kernel Classification: openSUSE Product: openSUSE Distribution Version: Leap 42.1 Hardware: x86-64 OS: openSUSE 42.1 Status: NEW Severity: Critical Priority: P5 - None Component: Kernel Assignee: kernel-maintainers@forge.provo.novell.com Reporter: michaelof@rocketmail.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- Additional information: - Using KDE/Plasma as GUI - current (again leading to freezes) kernel is 4.1.26-4.g294632f-default from OBS Kernel:openSUSE-42.1 repo I was asked to create a new bug - maybe a duplicate of bug 971695. Symptoms are looking very at least very similar: - System has been rock solid stable up to and including kernel-default-4.1.13-5.1. - After upgrading to newer kernels, offered by KDE's "Software Updates" applet/plasmoid, system randomly freezes from a couple times a day to over a week. - After beeing freezed for a minute or so, the system reboots on its own. - There are no signs of an upcoming freeze -- everything just stops, Symptoms of the freeze: Screen stays with the same image. I didn't see anything interesting in the system journal - it just abruptly ends. I have also noticed that my system rebooted on occasion when nobody was using it or even logged in. NOT reproducible but my strong "feeling": Freezes are happening, when a lot of disk activity is in the background on an USB 3.0 external HDD, and user mouse activity in the foreground (USB mouse). These phases of high external USB 3,0 HDD activity are e.g. daily "Back in time" backups. External USB 3.0 HDD is NTFS. UNFORTUNATELY these freezes are nearly always leading to a CORRUPTED NTFS file system. NOT detected by any linux tool I'm aware of, But all following "Back in time" backups are unsuccessful due to various reasons. MS Windows based CHKDSK /F detects hundreds, sometimes thousands of errors. On a nearly new HDD, no bad blocks, and ALWAYS checked and repaired after these freezes. Two cycles, to sure that all corruptions are fixed. As these are my by backups, this bug is more than SERIOUS for me. To be on the save side I'm making full "dd" based image backups of the whole internal drive (SSD) after booting OpenSuse 13.2 from an live stick. Initially searching for solution I've found the mentioned bug 971695. I've added some "me 2" comments, installed yast's kernel-kdump and was able to get a crash dump for kernel 4.1.15-8-default. Not sure if this is of interest. I've got the hint to upgrade to kernel 4.1.25 (https://bugzilla.opensuse.org/show_bug.cgi?id=971695#c19). Following this, I've got no freezes anymore for 4.1.25 and as far as I know two following kernels from OBS Kernel:openSUSE-42.1 repo. Current kernel is now 4.1.26-4.g294632f-default, as very frequently kernels are offered from OBS Kernel:openSUSE-42.1 repo. And 4.1.26-4 reintroduces the freezes :-( Twice yesterday, and I've reactivated the kernel-kdump option, which I've deactivated after the problem seemed to be solved. Please advice how to proceed. -- You are receiving this mail because: You are on the CC list for the bug.