Damon L. Chesser wrote:
I filed a bug report against the debian kernel and also against ubuntu cupsys (just covering my bases). Installed fc8, had the same issues. I could not print with any kernel >2.6.23. A kernel dev got a hold of me and asked me to change /proc/sys/net/ipv4/tcp_frto to 0 (set via /etc/sysctl.conf so as to take effect on every boot: net.ipv4.tcp_frto = 0)Damon L. Chesser wrote:Two systems: amd64 and i386. Both ran Sid. printer is networked with 192.168.200.150. Added printer via localhost:631 as a network (LPD) printer url is lpd://192.168.200.150/lpt1.Ok, found out it is kernel related. re-installed stable and did NO updates (even security updates), tested cupsys, it worked. Did security updates, got a new kernel.The printer comes to life, the data light blinks (Samsung ML-1430) then the server stops making noise but the data light keeps blinking. No paper comes out.re-installed i386 to stable, re-add the printer via gnome-cups-manager, tested, same results. So this is not a Sid issue.tested from a win box, prints fine.tested from ubuntu live (thinking maybe the Hawkings tech. print server was going bad), prints fine.This worked a month ago on Sid (amd64 box) before I test drove ubuntu. I don't see any obvious bug reports. I don't see a flood of messages coming across here. Nothing in the cups error log:E [04/Apr/2008:14:04:57 -0400] PID 26233 (/usr/lib/cups/backend/lpd) stopped with status 1!E [04/Apr/2008:14:06:54 -0400] CUPS-Add-Modify-Printer: Unauthorized E [04/Apr/2008:14:19:57 -0400] CUPS-Add-Modify-Printer: Unauthorized E [04/Apr/2008:14:19:59 -0400] CUPS-Add-Modify-Printer: Unauthorized all messages there are accounted for. the print jobs just stays in the print spool.All this is very strange. I have not had this issue before (though I have had printing killed in sid, never in sid and stable). What to do?output of uname -a for both kernels:Linux dam-main-deb 2.6.22-3-amd64 #1 SMP Sun Nov 4 18:18:09 UTC 2007 x86_64 GNU/Linux Linux dam-main-deb 2.6.24-1-amd64 #1 SMP Fri Apr 18 23:08:22 UTC 2008 x86_64 GNU/LinuxThe new kernel did not print to cupsys printer, but the spool (blinking lights and network activity) looks like it is transmitting very slowly. Eventually the printer will print an error report. This takes so long, only once have I gotten one.Ok, so 2.6.24-1 is bad for me. I grabbed the latest kernel source from kernel.org and made a kernel (2.6.25). Same issue.So, what do I do now, who do I file a bug report to? This is not a debian patch (kernel.org source had same issue), not a cupsys bug. Same package load out works with 2.6.22 but not with >2.6.22.btw, at this point I am on Sid with a 2.6.22-3-amd64 kernel or a 2.66.25 custom kernel (used 2.6.22 config to make)I am at a loss as how to fix this, any help would be appreciated.
This worked. However at this time, a stock kernel config will issue this same error to me. There are some other applications effected (a quick google for tcp_frto will show you, .http://mwh.geek.nz/ ) I am posting this here on the off chance some one is experiencing some strange network behavior and this will help them. To test echo 0 >/proc/sys/net/ipv4/tcp_frto then test your issue.
At this time, kernel devs are working on a solution. HTH -- Damon L. Chesser damon@damtek.com http://www.linkedin.com/in/dchesser