Felix Miata composed on 2017-02-27 04:39 (UTC-0400):
I just tried inserting a "16GB" USB stick on a 42.2/14.0.4 system, host g5eas, and got no notification of any kind, though dmesg certainly shows it, and scsi_dh_alua module is loaded. But, booted to TW/Plasma, same dmesg, and no device notification there either. 42.1/14.0.4 on same host likewise malfunctions.
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I tried a different 42.2/14.0.4 host gx745, also with TW/Plasma, with same failing result on both. :-(
I tried a third 42.2/14.0.4 host big31, also with TW/KDE3, with same failing result on both. Same failure on it too booting Stretch/14.0.5pre. :-(
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A 4th host gx780 tried only with 42.2 and KDE3 also fails to notify or mount, with dmesg similar to 2nd attachment. Booted to Jessie running bpo 4.8.11 and 14.0.4 likewise produces no notification, but at least fdisk found it. I updated Jessie, including bpo 4.9.2, and there's still no notification, plus dmesg is loaded with i915 driver segfaults.
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Hosts gx745 and big31 booted to openSUSE 42.1/KDE3 pop up a device notification as expected. :-p
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All four machines have Intel CPU/chipsets, with video Intel gx745 & gx780 (both Dell), Radeon big31 (Biostar) and Geforce g5eas (Gigabyte).
. Tried again with host gx780.
openSUSE 13.1 with KDE4 works as expected
openSUSE 42.1 with TDE 14.0.4 doesn't notify either USB sticks or OM discs
Debian Stretch with TDE 14.0.4 doesn't notify either USB sticks or OM discs
openSUSE 42.2 with KDE3 works as expected
openSUSE Tumbleweed with KDE3 or Plasma 5 works as expected