On 16.11.2015 17:25, Alan Stern wrote:
On Sun, 15 Nov 2015, Stéphane Lavergne wrote:
On Sat, Sep 12, 2015 at 4:08 AM, Hans-Peter Jansen <hpj@xxxxxxxxx> wrote:
With some changes in the 4.0 time frame, AND an update of the epson iscan
stuff, I'm happily scanning with my Epson 4490 Photo scanner plugged to a USB
3.0 port using xsane.
Other USB 3.0 issues are currently investigated.
Thank you for the update. I updated my Debian amd64 box to kernel
4.2.0-0 (Jessie backport) today, re-enabled "Auto" XHCI in my Gigabyte
BIOS and I can confirm that xhci_usb is handling my Fujitsu ScanSnap
S1500 correctly now.
FYI I do get 2 warnings in dmesg and my console every single time Sane
talks to the device:
[ 2036.780271] usb 3-12: ep 0x81 - rounding interval to 128
microframes, ep desc says 255 microframes
[ 2036.780835] usb 3-12: ep 0x2 - rounding interval to 128
microframes, ep desc says 255 microframes
No big deal, just thought I'd let _someone_ out there know. :)
There's no reason for these messages to be warnings. They don't
indicate that anything is wrong or out of the ordinary. Probably they
should be debug-level.
Alan Stern
True,
This is normal, the specs say we should round down to the nearest power of two.
I'll change it to debug
-Mathias
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