Comment 4 for bug 1411539

Tried again using unetbootin with the same result

This time I formatted the usb key as EXT4 and now I see some errors reported in dmesg:

[10957.453528] usb-storage 3-1:1.0: USB Mass Storage device detected
[10957.453697] scsi8 : usb-storage 3-1:1.0
[10958.454327] scsi 8:0:0:0: Direct-Access TDK LoR TF10 PMAP PQ: 0 ANSI: 6
[10958.454732] sd 8:0:0:0: Attached scsi generic sg2 type 0
[10960.199639] sd 8:0:0:0: [sdc] 15108480 512-byte logical blocks: (7.73 GB/7.20 GiB)
[10960.199846] sd 8:0:0:0: [sdc] Write Protect is off
[10960.199848] sd 8:0:0:0: [sdc] Mode Sense: 23 00 00 00
[10960.200052] sd 8:0:0:0: [sdc] No Caching mode page found
[10960.200054] sd 8:0:0:0: [sdc] Assuming drive cache: write through
[10960.205263] sdc: sdc1
[10960.206887] sd 8:0:0:0: [sdc] Attached SCSI removable disk
[10967.401204] EXT4-fs (sdc1): mounted filesystem with ordered data mode. Opts: (null)
[11172.459350] INFO: task extlinux:8675 blocked for more than 120 seconds.
[11172.459353] Not tainted 3.16.0-30-generic #40-Ubuntu
[11172.459354] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[11172.459356] extlinux D ffff88082fa13840 0 8675 8674 0x00000000
[11172.459359] ffff8807d3117d70 0000000000000082 ffff880743fe1e90 0000000000013840
[11172.459361] ffff8807d3117fd8 0000000000013840 ffff880743fe1e90 ffff8807d3117e98
[11172.459363] ffff8807d3117e90 7fffffffffffffff ffff880743fe1e90 ffff880743fc2868
[11172.459366] Call Trace:
[11172.459372] [<ffffffff81785509>] schedule+0x29/0x70
[11172.459374] [<ffffffff817847c9>] schedule_timeout+0x229/0x2a0
[11172.459377] [<ffffffff8108b256>] ? __queue_work+0x136/0x340
[11172.459379] [<ffffffff8108b52a>] ? __queue_delayed_work+0xaa/0x1c0
[11172.459382] [<ffffffff81786694>] wait_for_completion+0xb4/0x1e0
[11172.459386] [<ffffffff810a5670>] ? wake_up_state+0x20/0x20
[11172.459391] [<ffffffff81211ed0>] ? vfs_fsync+0x40/0x40
[11172.459394] [<ffffffff8120b355>] sync_inodes_sb+0xa5/0x1c0
[11172.459396] [<ffffffff81211ed0>] ? vfs_fsync+0x40/0x40
[11172.459399] [<ffffffff81211ee9>] sync_inodes_one_sb+0x19/0x20
[11172.459402] [<ffffffff811e4982>] iterate_supers+0xb2/0x110
[11172.459404] [<ffffffff81212165>] sys_sync+0x35/0x90
[11172.459407] [<ffffffff8178a3ad>] system_call_fastpath+0x1a/0x1f
[11292.591308] INFO: task extlinux:8675 blocked for more than 120 seconds.
[11292.591312] Not tainted 3.16.0-30-generic #40-Ubuntu
[11292.591313] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[11292.591314] extlinux D ffff88082fa13840 0 8675 8674 0x00000000
[11292.591318] ffff8807d3117d70 0000000000000082 ffff880743fe1e90 0000000000013840
[11292.591320] ffff8807d3117fd8 0000000000013840 ffff880743fe1e90 ffff8807d3117e98
[11292.591322] ffff8807d3117e90 7fffffffffffffff ffff880743fe1e90 ffff880743fc2868
[11292.591324] Call Trace:
[11292.591330] [<ffffffff81785509>] schedule+0x29/0x70
[11292.591333] [<ffffffff817847c9>] schedule_timeout+0x229/0x2a0
[11292.591336] [<ffffffff8108b256>] ? __queue_work+0x136/0x340
[11292.591338] [<ffffffff8108b52a>] ? __queue_delayed_work+0xaa/0x1c0
[11292.591340] [<ffffffff81786694>] wait_for_completion+0xb4/0x1e0
[11292.591345] [<ffffffff810a5670>] ? wake_up_state+0x20/0x20
[11292.591350] [<ffffffff81211ed0>] ? vfs_fsync+0x40/0x40
[11292.591353] [<ffffffff8120b355>] sync_inodes_sb+0xa5/0x1c0
[11292.591355] [<ffffffff81211ed0>] ? vfs_fsync+0x40/0x40
[11292.591357] [<ffffffff81211ee9>] sync_inodes_one_sb+0x19/0x20
[11292.591360] [<ffffffff811e4982>] iterate_supers+0xb2/0x110
[11292.591363] [<ffffffff81212165>] sys_sync+0x35/0x90
[11292.591366] [<ffffffff8178a3ad>] system_call_fastpath+0x1a/0x1f
[11412.723268] INFO: task extlinux:8675 blocked for more than 120 seconds.
[11412.723272] Not tainted 3.16.0-30-generic #40-Ubuntu
[11412.723273] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[11412.723274] extlinux D ffff88082fa13840 0 8675 8674 0x00000000
[11412.723277] ffff8807d3117d70 0000000000000082 ffff880743fe1e90 0000000000013840
[11412.723279] ffff8807d3117fd8 0000000000013840 ffff880743fe1e90 ffff8807d3117e98
[11412.723281] ffff8807d3117e90 7fffffffffffffff ffff880743fe1e90 ffff880743fc2868
[11412.723283] Call Trace:
[11412.723290] [<ffffffff81785509>] schedule+0x29/0x70
[11412.723292] [<ffffffff817847c9>] schedule_timeout+0x229/0x2a0
[11412.723295] [<ffffffff8108b256>] ? __queue_work+0x136/0x340
[11412.723297] [<ffffffff8108b52a>] ? __queue_delayed_work+0xaa/0x1c0
[11412.723300] [<ffffffff81786694>] wait_for_completion+0xb4/0x1e0
[11412.723304] [<ffffffff810a5670>] ? wake_up_state+0x20/0x20
[11412.723308] [<ffffffff81211ed0>] ? vfs_fsync+0x40/0x40
[11412.723311] [<ffffffff8120b355>] sync_inodes_sb+0xa5/0x1c0
[11412.723313] [<ffffffff81211ed0>] ? vfs_fsync+0x40/0x40
[11412.723315] [<ffffffff81211ee9>] sync_inodes_one_sb+0x19/0x20
[11412.723318] [<ffffffff811e4982>] iterate_supers+0xb2/0x110
[11412.723320] [<ffffffff81212165>] sys_sync+0x35/0x90
[11412.723324] [<ffffffff8178a3ad>] system_call_fastpath+0x1a/0x1f
mirto@mirto-P650SE:/Mio/ISO/kubuntu/14.10$