Kernel parameter does not change the behavior.
$ lsusb
Bus 002 Device 008: ID 174c:55aa ASMedia Technology Inc. ASM1051E SATA 6Gb/s
bridge, ASM1053E SATA 6Gb/s bridge, ASM1153 SATA 3Gb/s bridge
[...]
Bus 002 Device 002: ID 090c:1000 Silicon Motion, Inc. - Taiwan (formerly Feiya
Technology Corp.) Flash Drive
[...]
It is the SATA bridge that fails:
$ cat /etc/default/grub
[..]
GRUB_CMDLINE_LINUX_DEFAULT="usb-storage.quirks=174c:55aa:u"
[...]
Update grub. Reboot.
$ dmesg | grep -i uas
[ 2.491166] usbcore: registered new interface driver uas
[ 5.045577] usb 2-4.4.4.4.2: UAS is blacklisted for this device, using
usb-storage instead
Kernel parameter tested with:
Linux 4.15.0-91-generic #92-Ubuntu SMP Fri Feb 28 11:09:48 UTC 2020 x86_64
x86_64 x86_64 GNU/Linux
Linux 5.4.0-37-generic #41-Ubuntu SMP Wed Jun 3 18:57:02 UTC 2020 x86_64 x86_64
x86_64 GNU/Linux
Both fails.
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1886172
Title:
high speed data to usb disk makes the kernel think that is has been
unmounted
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