On 9/27/22 17:45, Frank Behrens wrote:
Hi,
I could use some debugging help.
I try to connect a CyberPower USV to my FreeBSD server, the uhid, usbhid
and hidbus modules are loaded and the new usb device is detected:
Sep 27 17:10:51 <kern.crit> kernel: ugen6.2: <CPS VP1200ELCD> at usbus6
But after some seconds the device is automatically disconnected and the
detection process starts again:
Sep 27 17:10:59 <kern.crit> kernel: ugen6.2: <CPS VP1200ELCD> at usbus6
(disconnected)
Sep 27 17:11:03 <kern.crit> kernel: ugen6.2: <CPS VP1200ELCD> at usbus6
Sep 27 17:11:11 <kern.crit> kernel: ugen6.2: <CPS VP1200ELCD> at usbus6
(disconnected)
A change of cable and usb port did not help. I switched usb debugging
on, but could not find any hint, that could guide me. I collected a lot
of debugging information, an usb dump file
and system information in
http://www2.behrens.de/usbusv_debug/usbusv_20220927.tbz
Does one of the specialists see what the problem is? Is there any
additional information I should provide?
Hi,
If you compile a kernel with "options USB_DEBUG" then enable:
sysctl hw.usb.uhub.debug=15
This will show if the device initiates the disconnect or not.
Dumping the USB device and configuration descriptors may also be useful.
FreeBSD has some logic to reject USB autoinstall CD's. I'm not sure if
this is the cause.
Please also read this thread:
"Flickering connection to UPS (again, but now I'm sure it is Ok under
Windows)" on this list.
--HPS
