Hullo, I've been running 12.10 very successfully on my Asus Netbook for about 6 weeks. (OK - there was a system error "Sorry Ubuntu has experienced an internal error etc" on startup -but I was able to inhibit this).
Yesterday, I (foolishly) accepted the package update - which ran & terminated normally. However, now, I can't boot! On default boot (Linux 3.5.0-17-generic), we go into the (traditional) plain purple screen - but stay there !
On recovery mode, I get:
[ 1.001512] Kernel panic - not syncing: VFS unable to mount root fs on unknown_block (0.0 [ 1.001572] Pid: 1, comm: swapper/0 Not tainted 3.5.0-17-generic 28-Ubuntu [ 1.001619] Call Trace: [ 1.001666] [<c15f0ec>] panic +0x81/0x17b [ 1.001666] [<c18aede1>] mount_block_root +0x1aa/0r23d [ 1.001763 [<c115cb1d>] ? sys_mknod +0x2d/0x30 [ 1.001807] [<c18deff1>] mount_root +0x5a/0x64 [ 1.001852] [<c18af145>] prepare_namespace +0+15e/0x192 [ 1.001901] [<114da05>] ? sys_access+0x25x0x30 [ 1.001946] [<c18aeb75>] kernel_init+0x1b1x0x1b6 [ 1.001991] [<c18ae41c>] ? log_level+0x2b/0x2b [ 1.002035] [<c18ae9c4>] ? start_kernel+0x363/0x363 [ 1.002083] [<c15d04fe>] kernel_thread_helper+0x6/0x10
(this was typed - there may be errors)
When I try the Linux 3.5.0_15_generic from the Grub advanced options, I get to log in and it shows the Linux environment. But I have no cursor control at all & it's useless!
I have this sort of problem before, following an upgrade (both when the upgrade worked & when it failed) eventually had to re-install. Is there a simple way out?