diff --git a/ChangeLog b/ChangeLog index 563435f8c..9eb337da3 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,7 @@ +2003-12-26 Henning Meier-Geinitz + + * README.darwin: Mentioned libusb problems. Updated fork section. + 2003-12-25 Henning Meier-Geinitz * doc/descriptions-external/niash.desc: Added information that diff --git a/README.darwin b/README.darwin index 460c1fd50..657c65288 100644 --- a/README.darwin +++ b/README.darwin @@ -18,6 +18,9 @@ sm3600 backend, disable sm3600 in dll.conf if you don't need it. Backends that use the function "fork" may not work at least with USB scanners. That's a limitation of MacOS X (doesn't use file descriptors for USB access). +Some backends have been modified to use threads on MAcOS X qand should +work. Others don't use fork at all. Both types of backends should work with +MacOS X. Changing the backends to use threads is an ongoing effort. SCSI-scanners and Firewire scanners: ------------------------------------ @@ -30,15 +33,23 @@ sane-find-scanner is not able to find SCSI scanners on MacOS X yet. USB-scanners: ------------- -Work with libusb. Very limited testing until now. Try -"sane-find-scanner -v -v" and report success or failure to the SANE mailing -list. Backends that use fork to create separate reader processes seem to fail. -At least the following scanners are known to work: UMax Astra 1220U and 2000U, -Epson Perfection 1640SU and 2450 Photo. +Work with libusb. Very limited testing until now. Try "sane-find-scanner -v -v" +and report success or failure to the SANE mailing list. At least the following +scanners are known to work: UMAX Astra 1220U and 2000U, Epson Perfection 1640SU +and 2450 Photo. + +There are some known problems with libusb: + +- Older libusb versions return a wrong number of bytes written. Most backends + will return an error and won't work. Update your version of libusb. + +- Sometimes libusb doesn't detect your scanner. Try setting the environment + variable SANE_DEBUG_SANEI_USB to 255 (e.g. "setenv SANE_DEBUG_SANEI_USB 255" + or "export SANE_DEBUG_SANEI_USB=255) before running scanimage -L. Parport-scanners: ----------------- I don't have any information about these. Please contact me or the SANE mailing list if you succeeded in using one of these. -2003-08-21 Henning Meier-Geinitz +2003-12-26 Henning Meier-Geinitz