On Thursday, March 8, 2018 at 8:12:59 AM UTC-5, Ed wrote: > On 03/07/2018 10:24 PM, Glen H wrote: > > Hi, > > > > I'm using R4 (having never used R3) and trying to get my scanner working > > but it stops scanning a page half way through. After debugging with the > > author of the scanner software they say the program asks for 128 KBytes of > > data and the first 256 bytes of this data is dropped (lost). > > > > To fix this I've tried: > > 1) Turning off USB 3.0 in BIOS (unfortunately this isn't really an option > > as all the external ports are disabled). It doesn't revert back to USB 2.0 > > 2) Set the ports to USB 2.0 via setpci: > > > > ``` > > lspci -nn | grep USB | cut -d '[' -f3 | cut -d ']' -f1 | xargs -I@ setpci > > -H1 -d @ d0.l=0 > > ``` > > > > Unfortunately neither of those made a difference. Using the > > scanner/software in Windows on a different computer works. > > > > > > I'm currently running a Qubes backup and then I'll try installing Ubuntu > > and see if that works. If so would seem to be related to Qubes. > > > > Does anyone have any ideas? My laptop is a Dell e7440 with the latest BIOS. > > > > Thanks, > > > > Glen > > > > Are you passing the device through to another VM? > > The USB pass-through method has given me issues in the past for devices > that use a lot of bandwidth (webcams), though you are saying data is > lost after only a few bytes, I still might be suspect of the USB > passthrough system in qubes... > > So if you ARE passing through you might want to try running the scanner > software directly from sys-usb to see if you can eliminate the USB > passthrough as a source of problems. > > Ed
Hi, I'll do some more tests in the next few days but just to answer some questions: 1) I have USB devices assigned in sys-usb 2) I use the devices panel widget to pass them to my AppVM. - then it shows up as "Bus 001 Device 002: ID 04f9:60a0 Brother Industries, Ltd ADS-2000" 3) The controller info from Dom0 is: 00:14.0 USB controller [0c03]: Intel Corporation 8 Series USB xHCI HC [8086:9c31] (rev 04) 00:1d.0 USB controller [0c03]: Intel Corporation 8 Series USB EHCI #1 [8086:9c26] (rev 04) I'll try testing in the debian-9 AppVM, test from sys-usb, and install Ubuntu too once I have time. One other thing I haven't investigated is "Configure strict reset for PCI devices" but it is grayed out in sys-usb Devices tab. Thanks for the help. Glen -- You received this message because you are subscribed to the Google Groups "qubes-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to qubes-users+unsubscr...@googlegroups.com. To post to this group, send email to qubes-users@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/qubes-users/f3679c33-c4c2-496e-bef0-9750321924b2%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
