Date: Fri, 17 Apr 2020 15:00:47 +0200 From: Hans Petter Selasky <hps@selasky.org> To: lev@FreeBSD.org, usb@freebsd.org Subject: =?UTF-8?Q?Re=3a_Cheap_UPS_with_USB_=c2=abflicker=c2=bb_with_FreeBSD?= =?UTF-8?Q?_but_not_with_Windows?= Message-ID: <4a0271c4-edf8-909f-c8d1-894323d1c8d5@selasky.org> In-Reply-To: <a97d989e-fb7e-b365-458c-c12e2c161a62@FreeBSD.org> References: <a97d989e-fb7e-b365-458c-c12e2c161a62@FreeBSD.org>
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On 2020-04-17 14:59, Lev Serebryakov wrote: > > Cheap Ippon UPS flickers with USB connection when master is FreeBSD CURRENT: > > .... > Apr 17 15:49:02 gateway kernel: ugen2.2: <PPC Offline UPS> at usbus2 (disconnected) > Apr 17 15:49:07 gateway kernel: ugen2.2: <PPC Offline UPS> at usbus2 > Apr 17 15:49:21 gateway kernel: ugen2.2: <PPC Offline UPS> at usbus2 (disconnected) > Apr 17 15:49:26 gateway kernel: ugen2.2: <PPC Offline UPS> at usbus2 > Apr 17 15:49:40 gateway kernel: ugen2.2: <PPC Offline UPS> at usbus2 (disconnected) > Apr 17 15:49:45 gateway kernel: ugen2.2: <PPC Offline UPS> at usbus2 > Apr 17 15:49:59 gateway kernel: ugen2.2: <PPC Offline UPS> at usbus2 (disconnected) > Apr 17 15:50:04 gateway kernel: ugen2.2: <PPC Offline UPS> at usbus2 > .... > > It works stable when connected to Windows notebook. Yes, I understand, that it is different host hardware. > Unfortunately, I can not check other OSes on hardware where it flickers, but maybe it is possible to set (or add) some quirk on our side? > Hi, Are you running -stable / -current? If not, try upgrading the kernel only first. What does usbconfig say about this device. Try monitoring the USB traffic: usbdump -i usbus2 -f 2 -s65536 -vvv Maybe some bad command triggers the disconnect. Last resort: sysctl hw.usb.disable_enumeration=1 Does your device still function? --HPS
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