Also seeing the issue here (on occasion) w/ 3.13.0-37-generic:
fb: conflicting fb hw usage nouveaufb vs VESA VGA - removing generic driver Console: switching to colour dummy device 80x25 BUG: unable to handle kernel NULL pointer dereference at 0000000000000138 IP: [<ffffffff8145d382>] con_set_unimap+0x32/0x290 .... Call Trace: [<ffffffff8131226d>] ? apparmor_capable+0x1d/0x130 [<ffffffff81457223>] vt_ioctl+0xe83/0x11c0 [<ffffffff8144ad3d>] tty_ioctl+0x26d/0xbb0 [<ffffffff811d03a0>] do_vfs_ioctl+0x2e0/0x4c0 [<ffffffff811d0601>] SyS_ioctl+0x81/0xa0 [<ffffffff8172f82d>] system_call_fastpath+0x1a/0x1f
Also seeing the issue here (on occasion) w/ 3.13.0-37-generic:
fb: conflicting fb hw usage nouveaufb vs VESA VGA - removing generic driver 382>] con_set_ unimap+ 0x32/0x290 26d>] ? apparmor_ capable+ 0x1d/0x130 223>] vt_ioctl+ 0xe83/0x11c0 d3d>] tty_ioctl+ 0x26d/0xbb0 3a0>] do_vfs_ ioctl+0x2e0/ 0x4c0 601>] SyS_ioctl+0x81/0xa0 82d>] system_ call_fastpath+ 0x1a/0x1f
Console: switching to colour dummy device 80x25
BUG: unable to handle kernel NULL pointer dereference at 0000000000000138
IP: [<ffffffff8145d
....
Call Trace:
[<ffffffff81312
[<ffffffff81457
[<ffffffff8144a
[<ffffffff811d0
[<ffffffff811d0
[<ffffffff8172f