--- Begin Message ---
Package: cups
Version: 2.3.3op2-3
Severity: important
Dear Maintainer,
Latest cups from unstable doesn't work with old USB printers anymore.
At least Samsung ML-1640 just prints an error like
"INTERNAL ERROR - Incomplete Session by time out".
Root cause seems to be:
https://bbs.archlinux.org/viewtopic.php?id=265299
https://github.com/OpenPrinting/cups/pull/160/commits/d2f41769f208729438414c76983385f0f13ef9b7
After applying this patch printing works again:
src/cups-2.3.3op2# diff -up backend/usb-libusb.c_orig backend/usb-libusb.c
--- backend/usb-libusb.c_orig 2021-05-25 11:41:02.981961321 +0300
+++ backend/usb-libusb.c 2021-05-25 11:42:39.990717869 +0300
@@ -1704,7 +1704,7 @@ static void *read_thread(void *reference
readstatus = libusb_bulk_transfer(g.printer->handle,
g.printer->read_endp,
readbuffer, rbytes,
- &rbytes, 250);
+ &rbytes, 60000);
if (readstatus == LIBUSB_SUCCESS && rbytes > 0)
{
fprintf(stderr, "DEBUG: Read %d bytes of back-channel data...\n", (int)rbytes);
Please consider applying this, thanks.
Cheers,
-Mikko
-- System Information:
Debian Release: bullseye/sid
APT prefers unstable-debug
APT policy: (500, 'unstable-debug'), (500, 'testing-debug'), (500, 'stable-debug'), (500, 'proposed-updates-debug'), (500, 'unstable'), (500, 'testing'), (500, 'stable'), (1, 'experimental-debug')
Architecture: amd64 (x86_64)
Kernel: Linux 5.10.0-5-amd64 (SMP w/4 CPU threads)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled
Versions of packages cups depends on:
ii cups-client 2.3.3op2-3
ii cups-common 2.3.3op2-3
ii cups-core-drivers 2.3.3op2-3
ii cups-daemon 2.3.3op2-3
ii cups-filters 1.28.7-1
ii cups-ppdc 2.3.3op2-3
ii cups-server-common 2.3.3op2-3
ii debconf [debconf-2.0] 1.5.74
ii ghostscript 9.53.3~dfsg-7
ii libavahi-client3 0.8-5
ii libavahi-common3 0.8-5
ii libc6 2.31-9
ii libcups2 2.3.3op2-3
ii libgcc-s1 10.2.1-6
ii libstdc++6 10.2.1-6
ii libusb-1.0-0 2:1.0.24-3
ii poppler-utils 20.09.0-3.1
ii procps 2:3.3.17-3
Versions of packages cups recommends:
ii avahi-daemon 0.8-5
ii colord 1.4.5-3
Versions of packages cups suggests:
ii cups-bsd 2.3.3op2-3
pn cups-pdf <none>
pn foomatic-db-compressed-ppds | foomatic-db <none>
pn smbclient <none>
ii udev 247.3-1
-- debconf information:
cupsys/raw-print: true
cupsys/backend: lpd, socket, usb, snmp, dnssd
--- End Message ---
--- Begin Message ---
Source: cups
Source-Version: 2.3.3op2-5
Done: Didier Raboud <odyx@debian.org>
We believe that the bug you reported is fixed in the latest version of
cups, which is due to be installed in the Debian FTP archive.
A summary of the changes between this version and the previous one is
attached.
Thank you for reporting the bug, which will now be closed. If you
have further comments please address them to 989073@bugs.debian.org,
and the maintainer will reopen the bug report if appropriate.
Debian distribution maintenance software
pp.
Didier Raboud <odyx@debian.org> (supplier of updated cups package)
(This message was generated automatically at their request; if you
believe that there is a problem with it please contact the archive
administrators by mailing ftpmaster@ftp-master.debian.org)
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512
Format: 1.8
Date: Thu, 27 May 2021 09:07:26 +0200
Source: cups
Architecture: source
Version: 2.3.3op2-5
Distribution: experimental
Urgency: low
Maintainer: Debian Printing Team <debian-printing@lists.debian.org>
Changed-By: Didier Raboud <odyx@debian.org>
Closes: 989073
Changes:
cups (2.3.3op2-5) experimental; urgency=low
.
* Backport 2 upstream USB backend fixes:
- Revert enforcing read limits (caused a regression with Lexmark filters)
- Use 60s timeout (instead of 250ms) for reading at backchannel, as some
older models malfunction if timeout is too short (Closes: #989073)
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Files:
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