Automount for flash drives now failing in 14.04

[MR ZenWiz]

On Fri, Aug 28, 2015 at 12:51 PM, MR ZenWiz <mrzenwiz at gmail.com> wrote:
>
> Interesting addendum:
>
> On my work desktop, the following message does appear in the log:
>
> Aug 28 12:46:53 USITRICHTMD1C kernel: [184090.219587] FAT-fs (sdc1):
> Volume was not properly unmounted. Some data may be corrupt. Please
> run fsck.
>
> But it mounts the drive anyway.
>
> Hmm....

And the latest on my home desktop (I've been away all weekend...):

I inserted the drive (which also mounts just fine on my laptop), and
no notice appeared announcing the drive, but there was also no error
in the syslog:

Aug 31 00:09:39 marbase kernel: [356752.151755] usb-storage 3-6:1.0:
USB Mass Storage device detected
Aug 31 00:09:39 marbase kernel: [356752.152002] scsi15 : usb-storage 3-6:1.0
Aug 31 00:09:39 marbase mtp-probe: checking bus 3, device 16:
"/sys/devices/pci0000:00/0000:00:14.0/usb3/3-6"
Aug 31 00:09:39 marbase mtp-probe: bus: 3, device: 16 was not an MTP device
Aug 31 00:09:40 marbase kernel: [356753.150021] scsi 15:0:0:0:
Direct-Access     SanDisk  Cruzer           4.05 PQ: 0 ANSI: 2
Aug 31 00:09:40 marbase kernel: [356753.150217] sd 15:0:0:0: Attached
scsi generic sg4 type 0
Aug 31 00:09:40 marbase kernel: [356753.150412] sd 15:0:0:0: [sdc]
8027789 512-byte logical blocks: (4.11 GB/3.82 GiB)
Aug 31 00:09:40 marbase kernel: [356753.150539] sd 15:0:0:0: [sdc]
Write Protect is off
Aug 31 00:09:40 marbase kernel: [356753.150541] sd 15:0:0:0: [sdc]
Mode Sense: 03 00 00 00
Aug 31 00:09:40 marbase kernel: [356753.150674] sd 15:0:0:0: [sdc] No
Caching mode page found
Aug 31 00:09:40 marbase kernel: [356753.150676] sd 15:0:0:0: [sdc]
Assuming drive cache: write through
Aug 31 00:09:40 marbase kernel: [356753.151985] sd 15:0:0:0: [sdc] No
Caching mode page found

And:

mar at marbase:~ $ df
Filesystem      1K-blocks      Used Available Use% Mounted on
/dev/sda1        20811336   6608212  13122924  34% /
none                    4         0         4   0% /sys/fs/cgroup
udev              8050964         4   8050960   1% /dev
tmpfs             1612352      1272   1611080   1% /run
none                 5120         0      5120   0% /run/lock
none              8061756     91076   7970680   2% /run/shm
none               102400        44    102356   1% /run/user
/dev/sda4       927164968 709917984 207809816  78% /htera
/dev/sdb2       515930552 311242048 178457720  64% /home
/dev/sdb3      1375703508 620542968 685255744  48% /ttera

Only when I run Thunar and access the drive does it finally appear.

It behaves exactly the same way for my 32GB SanDisk cruzer - no
notification, no mount until I go into Thunar and access the drive.
THEN it mounts:

Aug 31 00:14:32 marbase udisksd[2254]: Mounted /dev/sdc1 at
/media/mar/MARTITAN on behalf of uid 500
Aug 31 00:14:38 marbase udisksd[2254]: Mounted /dev/sdd1 at
/media/mar/SAN32GB on behalf of uid 500

Wny is the automounter failing?

MR