On 2020-08-18 00:03, Christoph R. Winter wrote:
Hello, thanks for your fast answer.
Am 17.08.2020 11:29, schrieb Gerhard Roth:
The "not on queue" error sounds more like a bug in xhci(4). Could you
please try to disable USB3 in the BIOS an see if the problem resolves
then.
I disabled USB3 in the BIOS but the connection died again randomly. The
difference is, without USB3 there are no errors in XConsole nor in
/var/log/messages.
I also tried the HDD with OpenBSD in a ThinkPad W541 with another LTE
card (other card but same model) with exact the same results.
To verify that it is no hardware thing, I tried a recent live version of
a Linux Mint on booth machines. The download and to run it for some time
worked without any connection lose.
Regards,
Christoph
Hi Christoph,
MBIM has a method to reset devices. However, this is not implemented in
umb(4). So it the device detaches itself from the USB this is almost
certainly a firmware bug.
Just because you didn't see it with Linux doesn't mean that this has to
be a problem with umb(4). On freedesktop.org (the home of libmbim),
there have been reports of detaching EM7345, too. And all of them
suggest a firmware update. See
https://lists.freedesktop.org/archives/libqmi-devel/2018-August/002947.html
Could you please check, if there is a newer firmware available an if so,
update your device.
Gerhard
