Date: Mon, 17 Feb 2003 01:23:31 -0500 (EST) From: Brad Laue <brad@brad-x.com> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/48359: SiS 5597/8 USB + uscanner breakage Message-ID: <20030217062331.CB2A522104F@TMA-1.brad-x.com>
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>Number: 48359
>Category: kern
>Synopsis: SiS 5597/8 USB + uscanner breakage
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Sun Feb 16 22:30:08 PST 2003
>Closed-Date:
>Last-Modified:
>Originator: Brad Laue
>Release: FreeBSD 4.7-STABLE i386
>Organization:
brad-x.com
>Environment:
System: FreeBSD TMA-1.brad-x.com 4.7-STABLE FreeBSD 4.7-STABLE #1: Wed Jan 8 03:52:02 EST 2003 root@TMA-1.brad-x.com:/usr/obj/usr/src/sys/DISCOVERY-IPF i386
ohci0@pci0:2:2: class=0x0c0310 card=0x0a141019 chip=0x70011039 rev=0x07 hdr=0x00 vendor = 'Silicon Integrated Systems (SiS)'
device = 'SiS5597/8 Universal Serial Bus Controller'
class = serial bus
subclass = USB
ohci1@pci0:2:3: class=0x0c0310 card=0x0a141019 chip=0x70011039 rev=0x07 hdr=0x00 vendor = 'Silicon Integrated Systems (SiS)'
device = 'SiS5597/8 Universal Serial Bus Controller'
class = serial bus
subclass = USB
>Description:
The USB controller present here does not interact well with uscanner.
The problem manifests itself in an inability to instruct the scanner
to conduct a scan more than once, reliably. The device will succeed,
silently return to idle, and will never be heard from again.
All SANE frontends fail to communicate with the scanner after this
point.
If another USB device such as a mouse is plugged in at the same time,
this does not occur. This may provide a clue as to where the failure is
hopefully.
The scanner used to demonstrate this is an Agfa Snapscan e20. Whether
this is specific to the type of scanner is unknown. The snapscan works
flawlessly with other USB controllers using FreeBSD, including that
included in the intel i810e chipset and the VIA KT133. This pinpoints
an interaction with the SiS controller specifically.
>How-To-Repeat:
Use snapscan e20 with SANE frontend such as xscanimage GIMP plugin.
- Scan using different modes and resolutions, multiple times each.
- Observe that when the scanner is the only device plugged into
a USB port, this recurs.
- Others who see this PR, please test this condition with
other USB scanners (non-snapscan)
>Fix:
Workaround: Use a USB mouse or plug another USB device into the other port. This is a workaround to the issue, and the scanner(s) will proceed to work well.
>Release-Note:
>Audit-Trail:
>Unformatted:
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