Sounds more like your / is going read-only?
I did have one freeze a couple of days ago that I accounted to some other issue. But checking the logs backtracking to that moment, I encountered this:
Dec 4 10:47:07 OSUSE111 kernel: end_request: I/O error, dev sdb, sector 1482490600
Dec 4 10:47:07 OSUSE111 kernel: Buffer I/O error on device sdb2, logical block 1550
Dec 4 10:47:07 OSUSE111 kernel: lost page write due to I/O error on sdb2
Dec 4 10:47:07 OSUSE111 kernel: Aborting journal on device sdb2.
Dec 4 10:47:07 OSUSE111 kernel: Buffer I/O error on device sdb2, logical block 1545
Dec 4 10:47:07 OSUSE111 kernel: lost page write due to I/O error on sdb2
Dec 4 10:47:07 OSUSE111 kernel: journal commit I/O error
sdb is a usb disk I had attached…
At the time I was busy with a ssh session with X forwarding enabled… one of those things that normally never causes any issues.
Then last night when closing Firefox (it had some java related sites open), my X session froze… mouse was still moving, but keyboard input wasn’t accepted.
I could not even switch to a console using ALT-F1,2,3…
I’ve set my powermanagement (GNOME) to do a shutdown when pressing the power button… and that worked without any errors shown while shutting down.
The only possible error I found in the logs is:
Dec 6 22:15:39 OSUSE111 smartd[4080]: Device: /dev/sda [SAT], SMART Prefailure Attribute: 3 Spin_Up_Time changed from 218 to 231
Dec 6 22:15:39 OSUSE111 smartd[4080]: Device: /dev/sda [SAT], SMART Usage Attribute: 194 Temperature_Celsius changed from 122 to 137
’ smartctl /dev/sda -a ’ indicates all should be fine (main values: status PASSED & no errors logged).
Or my disk is failing and this is a coincidence… or there is something fishy wish the new kernel and drive access or other?
(!) Not saying this is related to what you are experiencing, but just comparing notes and checking to exclude this as issue…
root and /home values in fstab:
/dev/disk/by-id/ata-Hitachi_HTS721080G9SA00_MPCD12Y4GL6BZE-part2 / reiserfs acl,user_xattr 1 1
/dev/disk/by-id/ata-Hitachi_HTS721080G9SA00_MPCD12Y4GL6BZE-part3 /home ext3 defaults 1 2