Despite of EFI boot mode (secure boot / without secure boot):
mount of all removable USB devices is permanently failing.
(indepent from KDE connect + KDE Ger��te��berwachung settings)
used kernel: 4.11.7-1.gddd09a5-default
config: Ryzen, AMD RX460 (polaris 11), board: GA-AB350-Gaming
***Message in Dolphin window:
Beim Zugriff auf ���openSUSE-42.1-DVD-x86_640148��� ist ein Fehler aufgetreten,
die Meldung lautet: Die angegebene Operation ist fehlgeschlagen: Error mounting
/dev/sdf1 at /run/media/heinz/openSUSE-42.1-DVD-x86_640148: Command-line `mount
-t "iso9660" -o
"uhelper=udisks2,nodev,nosuid,uid=1000,gid=100,iocharset=utf8,mode=0400,dmode=0500"
"/dev/sdf1" "/run/media/heinz/openSUSE-42.1-DVD-x86_640148"' exited with
non-zero exit status 32: mount: wrong fs type, bad option, bad superblock on
/dev/sdf1,
missing codepage or helper program, or other error
In some cases useful info is found in syslog - try
dmesg | tail or so.
***shell command:
> dmesg | tail
(no output. hanger until <ctrl>Q )
> dmesg
(the end of endless repetitions, stopped with <ctrl>Q )
.......
[ 559.124884] IRQ_NOTHREAD set
[ 559.124891] ->handle_irq(): ffffffffc048c420,
[ 559.124897] IRQ_NOREQUEST set
[ 559.124897] IRQ_NOTHREAD set
[ 559.124904] irq 7, desc: ffff8d7e17c80800, depth: 0, count: 0, unhandled: 0
[ 559.124909] IRQ_NOTHREAD set
[ 559.124917] irq 7, desc: ffff8d7e17c80800, depth: 0, count: 0, unhandled: 0
[ 559.124919] ->action(): ffffffffb1e5a840
[ 559.124923] IRQ_NOTHREAD set
[ 559.124930] irq 7, desc: ffff8d7e17c80800, depth: 0, count: 0, unhandled: 0
[ 559.124933] ->action(): ffffffffb1e5a840
[ 559.124938] IRQ_NOTHREAD set
[ 559.124945] irq 7, desc: ffff8d7e17c80800, depth: 0, count: 0, unhandled: 0
[ 559.124952] IRQ_NOTHREAD set
[ 559.124959] irq 7, desc: ffff8d7e17c80800, depth: 0, count: 0, unhandled: 0
[ 559.124962] ioapic_ir_chip+0x0/0x120
[ 559.124965] IRQ_NOTHREAD set
[ 559.124973] irq 7, desc: ffff8d7e17c80800, depth: 0, count: 0, unhandled: 0
[ 559.124976] ->action(): ffffffffb1e5a840
[ 559.124978] IRQ_NOTHREAD set
[ 559.124985] irq 7, desc: ffff8d7e17c80800, depth: 0, count: 0, unhandled: 0
[ 559.124992] IRQ_NOTHREAD set
[ 559.124998] irq 7, desc: ffff8d7e17c80800, depth: 0, count: 0, unhandled: 0
[ 559.125000] ->irq_data.chip(): ffffffffb1f3bce0,
[ 559.125003] IRQ_NOTHREAD set
[ 559.125010] irq 7, desc: ffff8d7e17c80800, depth: 0, count: 0, unhandled: 0
[ 559.125013] ->action(): ffffffffb1e5a840
[ 559.423379] IRQ_NOTHREAD set
[ 559.423388] IRQ_NOTHREAD set
[ 559.423396] ->action(): ffffffffb1e5a840
[ 559.423398] IRQ_NOTHREAD set
[ 559.423404] irq 7, desc: ffff8d7e17c80800, depth: 0, count: 0, unhandled: 0
[ 559.423408] IRQ_NOTHREAD set
[ 559.423414] irq 7, desc: ffff8d7e17c80800, depth: 0, count: 0, unhandled: 0
[ 559.423416] ->action(): ffffffffb1e5a840
[ 559.423417] IRQ_NOTHREAD set
[ 559.423424] irq 7, desc: ffff8d7e17c80800, depth: 0, count: 0, unhandled: 0
[ 559.423427] IRQ_NOTHREAD set
[ 559.423433] irq 7, desc: ffff8d7e17c80800, depth: 0, count: 0, unhandled: 0
[ 559.423436] bad_chained_irq+0x0/0x40
[ 559.423437] IRQ_NOTHREAD set
[ 559.423443] irq 7, desc: ffff8d7e17c80800, depth: 0, count: 0, unhandled: 0
[ 559.423448] IRQ_NOTHREAD set
[ 559.423454] irq 7, desc: ffff8d7e17c80800, depth: 0, count: 0, unhandled: 0
[ 559.423457] ->action(): ffffffffb1e5a840
[ 559.423459] IRQ_NOTHREAD set
[ 559.423465] irq 7, desc: ffff8d7e17c80800, depth: 0, count: 0, unhandled: 0
[ 559.423470] IRQ_NOTHREAD set
[ 559.423476] irq 7, desc: ffff8d7e17c80800, depth: 0, count: 0, unhandled: 0
[ 559.423480] IRQ_NOPROBE set
[ 559.423481] IRQ_NOTHREAD set
[ 559.423487] irq^C
Additional hint: up to kernel 4.11.5: mount without problems, kernel 4.11.6:
with secure boot mount was often failing, but worked sometimes.