I am having the same (read-only file system) problem after wake from
sleep triggered by opening the lid on the laptop. I have included all
the useful information I gathered from logs. I will also, as previously
described, attempt to capture more relevant data if/when phenomenon
occurs again.
##mount ->
/dev/sda5 on / type ext4 (rw,errors=remount-ro)
proc on /proc type proc (rw,noexec,nosuid,nodev)
none on /sys type sysfs (rw,noexec,nosuid,nodev)
none on /sys/fs/fuse/connections type fusectl (rw)
none on /sys/kernel/debug type debugfs (rw)
none on /sys/kernel/security type securityfs (rw)
none on /dev type devtmpfs (rw,mode=0755)
none on /dev/pts type devpts (rw,noexec,nosuid,gid=5,mode=0620)
none on /dev/shm type tmpfs (rw,nosuid,nodev)
none on /var/run type tmpfs (rw,nosuid,mode=0755)
none on /var/lock type tmpfs (rw,noexec,nosuid,nodev)
none on /lib/init/rw type tmpfs (rw,nosuid,mode=0755)
none on /var/lib/ureadahead/debugfs type debugfs (rw,relatime)
binfmt_misc on /proc/sys/fs/binfmt_misc type binfmt_misc
(rw,noexec,nosuid,nodev)
/home/burnett/.Private on /home/burnett type ecryptfs
(ecryptfs_sig=848fa9a5a2c8207f,ecryptfs_fnek_sig=28ea3f06089bd9f2,ecryptfs_cipher=aes,ecryptfs_key_bytes=16)
gvfs-fuse-daemon on /home/burnett/.gvfs type fuse.gvfs-fuse-daemon
(rw,nosuid,nodev,user=burnett)
2.6.32-22-generic (64-bit)
Ubuntu 10.04 LTS
##hdparm -i /dev/sda ->
Model=Hitachi, FwRev=PB4OC60F, SerialNo=091117PB4406Q7CRZLUL
Config={ HardSect NotMFM HdSw>15uSec Fixed DTR>10Mbs }
RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=4
BuffType=DualPortCache, BuffSize=7208kB, MaxMultSect=16, MultSect=off
CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=976773168
IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120}
PIO modes: pio0 pio1 pio2 pio3 pio4
DMA modes: mdma0 mdma1 mdma2
UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6
AdvancedPM=yes: mode=0xFE (254) WriteCache=enabled
Drive conforms to: unknown: ATA/ATAPI-2,3,4,5,6,7
* signifies the current active mode
--
Repetitive massive filesystem corruption
https://bugs.launchpad.net/bugs/528981
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