Alan Stern wrote: > On Tue, 19 Sep 2006, John Haxby wrote: > > >> Alan Stern wrote: >> >>> You have CONFIG_USB_DEBUG set, right? What shows up in the dmesg log when >>> that jerkiness appears? >>> >>> >> Same as before, so far as I can tell: >> >> ehci_hcd 0000:00:10.4: port 4 high speed >> ehci_hcd 0000:00:10.4: GetStatus port 4 status 001005 POWER sig=se0 PE >> CONNECT >> usb 1-4: reset high speed USB device using ehci_hcd and address 4 >> usb 1-4: usb-storage timed out on ep0in len=18/64 >> ehci_hcd 0000:00:10.4: port 4 high speed >> ehci_hcd 0000:00:10.4: GetStatus port 4 status 001005 POWER sig=se0 PE >> CONNECT >> usb 1-4: usb-storage timed out on ep0out len=0/0 >> usb 1-4: usb-storage timed out on ep0out len=0/0 >> usb 1-4: device not accepting address 4, error -110 >> > ... > > >> There's more after that to do with the card reader devices being dead >> and removed, but it's the same as I reported yesterday (I can post it >> all again if you like). >> >> >>> What happens to the mouse if you run without ehci-hcd loaded? >>> >>> >> I tired that a while ago on the grounds that I could live without >> ehci_hcd but it didn't have any effect. >> > > It must have had _some_ effect. For example, those messages in the log > above labelled "ehci_hcd" could not have been present. > Sorry, yes, it had that effect. The mouse still did its jerking thing though -- it was that that lead me to think that the ehci_hcd errors are a symptom of something else going wrong. >> I'll try it again though (with >> irqbalance turned on for consistency's sake) and report back tomorrow >> (probably, it can take a while for the problem to show up). >> > > I asked because the log doesn't mention anything to do with the mouse. It > could simply be that the repeated retries for the dying card reader are > using up too much CPU time, not leaving enough for the mouse handler to > run with sufficiently low latency. > That would show up on gkrellm though wouldn't it? I'll look more closely at what the system is doing next time it happens.
jch ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys -- and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Linux-usb-users@lists.sourceforge.net To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-users
