USB 2.0 (EHCI) keeps crapping out (3.2.29)
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Running vanilla 3.2.29 (Slackware 14.0). I also had this issue on 2.6.37.6 and *possibly* 2.6.33.x, but I don't recall.
Every now and again (could be every few days, could take a couple of weeks... depends.) USB 2.0 stops working. My scanner as well as certain mass-storage devices that are USB-2.0 compatible fail to function all of a sudden.
With the said mass storage devices, I get lots of errors like this in my logs:
hub 1-0:1.0: unable to enumerate USB device on port 3
Devices that have previously been mounted and accessed successfully begin giving input/output errors when I try to ls them.
rmmod'ing ehci_hcd and modprobe'ing it again resolves the issue until it occurs again.
It *could* be a hardware problem, but it seems odd that unloading & reloading the module instantly makes it work perfectly again.
Via USB 1.1/2.0 controller from circa 2002-2003.
If anyone has any ideas, please let me know...
logan@logancomp:~$ /sbin/lspci |grep -i usb 00:10.0 USB controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80) 00:10.1 USB controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80) 00:10.2 USB controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 80) 00:10.3 USB controller: VIA Technologies, Inc. USB 2.0 (rev 82)
logan@logancomp:~$ cat /proc/cmdline auto BOOT_IMAGE=Slackware ro root=802 nohz=off highres=off clocksource=jiffies acpi_enforce_resources=lax vt.default_utf8=0
Quoted 11 lines · Logan Rathbone
*** NOTE: Kindly CC me directly if you reply to list since I'm not an LKML subscriber. ***
Running vanilla 3.2.29 (Slackware 14.0). I also had this issue on 2.6.37.6 and *possibly* 2.6.33.x, but I don't recall.
Every now and again (could be every few days, could take a couple of weeks... depends.) USB 2.0 stops working. My scanner as well as certain mass-storage devices that are USB-2.0 compatible fail to function all of a sudden.
With the said mass storage devices, I get lots of errors like this in my logs:
hub 1-0:1.0: unable to enumerate USB device on port 3
What is the _first_ error that shows up in dmesg when the failure occurs?
Rob
Quoted 13 lines · Rob Landley
Quoted 12 lines · Logan Rathbone
*** NOTE: Kindly CC me directly if you reply to list since I'm not an LKML subscriber. ***
Running vanilla 3.2.29 (Slackware 14.0). I also had this issue on 2.6.37.6 and *possibly* 2.6.33.x, but I don't recall.
Every now and again (could be every few days, could take a couple of weeks...
depends.) USB 2.0 stops working. My scanner as well as certain mass-storage
devices that are USB-2.0 compatible fail to function all of a sudden.
Quoted 6 lines
Quoted 4 lines
With the said mass storage devices, I get lots of errors like this in my logs:
hub 1-0:1.0: unable to enumerate USB device on port 3
What is the _first_ error that shows up in dmesg when the failure occurs?
I *think* this is the first error that appears:
usb 1-3: USB disconnect, device number 3
sd 5:0:0:0: Device offlined - not ready after error recovery
That second message is sometimes:
usblp0: removed
But honestly I can't recall if my USB 2.0 printer stopped working at that point in time. The effect of the crap-out is mainly noticeable on my mass storage devices since I can't mount them (the device nodes do not get created by udev until I rmmod & modprobe ehci_hcd again or reboot).
I also see stuff like this scattered throughout (hard to tell if it's one of the first or last errors that pops up though... I think it's the last. It usually pops up after a whole whack of the "unable to enumerate" errors:
ehci_hcd 0000:00:10.3: force halt; handshake f8044014 0000c000 00000000 -> -110