diff options
Diffstat (limited to 'doc/sane-usb.man')
| -rw-r--r-- | doc/sane-usb.man | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/doc/sane-usb.man b/doc/sane-usb.man index 8237a8a..cb65c7f 100644 --- a/doc/sane-usb.man +++ b/doc/sane-usb.man @@ -12,7 +12,7 @@ sanei_usb interface. However, there is one exceptions: USB Scanners supported by the microtek2 backend need a special USB kernel driver, see .BR sane\-microtek2 (5) -for details. +for details. .SH "QUICK START" This is a short HOWTO-like section. For the full details, read the following @@ -71,11 +71,11 @@ Usually udev or for older distributions the hotplug utilities are used, which support dynamic setting of access permissions. SANE comes with udev and hotplug scripts in the directory tools/udev and tools/hotplug. They can be used for setting permissions, see @DOCDIR@/README.linux, tools/README and the README in -the tools/hotplug directory for more details. +the tools/hotplug directory for more details. .PP For the .BR BSDs , -the device files used by libusb are named +the device files used by libusb are named .IR /dev/ugen* . Use chmod to apply appropriate permissions. @@ -114,7 +114,7 @@ usb 0x055f 0x0006 .PP would have the effect that all USB devices in the system with a vendor id of 0x55f and a product id of 0x0006 would be probed and recognized by the -backend. +backend. .PP If your scanner is not detected automatically, it may be necessary to edit the appropriate backend configuration file before using SANE for the first time. @@ -138,6 +138,13 @@ environment variable controls the debug level for the USB I/O subsystem. E.g., a value of 128 requests all debug output to be printed. Smaller levels reduce verbosity. Values greater than 4 enable libusb debugging (if available). Example: export SANE_DEBUG_SANEI_USB=4. +.PP +.TP +.B SANE_USB_WORKAROUND +If your scanner does not work when plugged into a USB3 port, try +setting the environment variable SANE_USB_WORKAROUND to 1. This +may work around issues which happen with particular kernel +versions. Example: export SANE_USB_WORKAROUND=1. .SH "SEE ALSO" .BR sane (7), |