Bug 243038
| Summary: | USB printer keeps disconnecting | ||||||||||||
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| Product: | [Fedora] Fedora | Reporter: | Barry Stewart <blown.tire> | ||||||||||
| Component: | kernel | Assignee: | Pete Zaitcev <zaitcev> | ||||||||||
| Status: | CLOSED ERRATA | QA Contact: | Brian Brock <bbrock> | ||||||||||
| Severity: | high | Docs Contact: | |||||||||||
| Priority: | low | ||||||||||||
| Version: | 7 | CC: | cebbert, dave26, davej, hafflys, hawat.thufir, iny, saphipps, victor.lz | ||||||||||
| Target Milestone: | --- | ||||||||||||
| Target Release: | --- | ||||||||||||
| Hardware: | x86_64 | ||||||||||||
| OS: | Linux | ||||||||||||
| Whiteboard: | |||||||||||||
| Fixed In Version: | Doc Type: | Bug Fix | |||||||||||
| Doc Text: | Story Points: | --- | |||||||||||
| Clone Of: | Environment: | ||||||||||||
| Last Closed: | 2007-08-27 14:31:39 UTC | Type: | --- | ||||||||||
| Regression: | --- | Mount Type: | --- | ||||||||||
| Documentation: | --- | CRM: | |||||||||||
| Verified Versions: | Category: | --- | |||||||||||
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |||||||||||
| Cloudforms Team: | --- | Target Upstream Version: | |||||||||||
| Embargoed: | |||||||||||||
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Description
Barry Stewart
2007-06-07 00:23:43 UTC
That's a hardware and/or driver problem. Typically it's hardware, yes. A Linux host does not disconnect devices (although in theory it can). But driver or HAL can precipitate it. Barry, could you get me a trace with usbmon, please? There's a HOWTO in /usr/share/doc/kernel-doc-2.6.21/Documentation/usb/usbmon.txt *** Bug 243063 has been marked as a duplicate of this bug. *** OK, this seems like a bad pattern. Provisionally, I blame autosuspend, because there weren't any changes to usblp. Dave, I'll need your usbmon trace too, to compare it with Barry's. Please do not drop it into the comments box, attach as a file instead. Created attachment 156524 [details]
pl2305 usbmon trace
Created attachment 156607 [details]
ML-2010 usbmon trace
Just upgraded to F7 (i386). Samsung ML-2010 printer installs ok but applications (OOo Writer etc) say that printer is not connected to USB. Also was not able to print test page when printer was added. Tried the remedy in bug #214189 but did not work this time. Was working prior to upgrade FC6->F7. upgraded to 2.6.21-1.3228.fc7, and new system-config-printer packages today, hoping for a change, but no luck... bad thing about this is i can't leave this device plugged in all of the time, only when i need to print something... system will not boot up because the kernel is waiting for all USB devices to be initialized. Didn't find this out until i removed the "quiet" option in grub. anyway just wondering if the traces helped at all, or if there is anything else i can do to help, any more info or testing or ideas... Thanks. Yes, the traces were helpful. Here are the key excerpts, annotated: Victor's: ffff810076bb90c0 1796196332 S Ci:036:00 s a1 00 0000 0000 03ff 1023 < ffff810076bb90c0 1796198338 C Ci:036:00 0 58 = 003a4d46 473a5361 6d73756e 673b434d 443a4744 493b4d44 4c3a4d4c 2d323031 --- 2992us difference ffff8100648ed1c0 1796201330 C Bi:036:03 -2 0 <--- unlink --- 1999ms difference ffff810076bb90c0 1798200631 S Co:001:00 s 23 03 0002 0005 0000 0 <--- Set port feature 2 port 5 ffff810076bb90c0 1798200637 C Co:001:00 0 0 ffff810037cf9380 1798223770 C Ii:001:01 0 2 = 2000 <--- Disconnect interrupt Dave's: ffff81007109d980 1023042899 S Ci:068:00 s a1 00 0000 0001 03ff 1023 < ffff81007109d980 1023050293 C Ci:068:00 0 82 = 00524d41 4e554641 43545552 45523a48 65776c65 74742d50 61636b61 72643b43 ffff81002a793180 1023051302 C Bi:068:02 -2 0 <------------------- unlink --- 1999624us difference ffff81007109d980 1025050926 S Co:068:00 s 00 03 0001 0000 0000 0 <---- Set device feature ffff81007109d980 1025051989 C Co:068:00 0 0 ffff81007109d980 1025051993 S Co:001:00 s 23 03 0002 0002 0000 0 <---- Set port feature, feature 0x0002, port 2 ffff81007109d980 1025051996 C Co:001:00 0 0 ffff810037fbc1c0 1025186903 C Ii:001:01 0 1 = 04 Feature 2 is USB_PORT_FEAT_SUSPEND. So, when kernel attempts to suspend the port, printer disconnects and reconnects. The code is supposed to just work, there's not even a tunable to disable it (except rebuilding whole kernel without CONFIG_USB_SUSPEND). I'll have to poke the author of this. FYI - problem still exists after updating to kernel-2.6.21-1.3228.fc7 Also should have mentioned before that printer works fine in fc6 and win2k. rpm -q --changelog kernel | grep -B 2 SUSP * Fri May 04 2007 Dave Jones <davej> - Reenable CONFIG_USB_SUSPEND -- * Fri May 04 2007 Dave Jones <davej> - Reenable CONFIG_USB_SUSPEND Oh by the way, Dave, Victor: please attach your /proc/bus/usb/devices (preferably with the printer attached, although I understand it may be difficult to catch it while it's not being processed, because of endless reconnects). I would like to see which specific controller drives it. (In reply to comment #11) > Oh by the way, Dave, Victor: please attach your /proc/bus/usb/devices > (preferably with the printer attached, although I understand it may be > difficult to catch it while it's not being processed, because of endless > reconnects). I would like to see which specific controller drives it. /proc/bus/usb/devices is an empty document (o bytes according to Konqueror) Created attachment 157131 [details]
/proc/bus/usb/devices file containing ML-2010 USB printer
Created attachment 157209 [details]
proc bus usb devices
Mental note: Alan Stern's reply: http://marc.info/?l=linux-usb-devel&m=118192695002702 "By the way, the symptoms with the two printers weren't quite the same. dave's disconnected itself, but Barry's issued a remote wakeup request (in spite of the fact that remote wakeup wasn't enabled) and then failed to respond to a Get-Device-Status query -- it returned 1 byte instead of 2. That failure is why it was disconnected." I still do not know what to do about it. Developing... I have a USB keyboard and a USB mouse and i do not have any disconnects with them only the USB<->parallel adapter. this is the device by the way: http://www.newegg.com/Product/Product.aspx?Item=N82E16812119003 I recompiled 2.6.21.5 (from kernel.org) with USB_SUSPEND turned off and this fixes the disconnects. However I'd rather not have to do this... Is there a way to add this device to a list so that it does not use SUSPEND? Thanks. Could this effect a Samsung ML-2510 printer under FC6? I hate USB on linux for this reason. I never know if it's a USB issue or something else. thanks, Thufir WORKAROUND: My ML-2010 printer now works (no more disconnects) after adding "usbcore.autosuspend=0" (without the quotes) to the kernel command line in /etc/grub.conf USB autosuspend is now disabled in the Fedora 7 kernel. Film at 11... Patch is in kernel 2.6.21-1.3255.fc7, in updates-testing now. USB autosuspend is disabled by default but can be enabled by the user. (There is also an Ubuntu bug tracking autosuspend issues over at https://bugs.launchpad.net/ubuntu/+source/linux-source-2.6.20/+bug/85488 ) |