Le 28 avr. 2017 15:57, "Maël Lavault" <mael.lavault@xxxxxxxxxxxxxxxxxxx > a écrit : On Fri, 2017-04-28 at 16:58 +0300, Mathias Nyman wrote: > On 21.04.2017 11:08, Maël Lavault wrote: > > On Tue, 2017-04-18 at 16:58 +0200, Maël Lavault wrote: > > > Hi, > > > > > > I can't find how to reply to an old thread with majordomo, sorry > > > for > > > the inconvenience it might cause. > > > > > > I'm reposting an issue [0] that has been inactive for a few month > > > but > > > still present in kernel 4.10.10 on a Macbook pro 12,1. > > > > > > I can provide more informations if needed but the issue is > > > explained > > > in > > > details in the bugzilla issue. > > > > > > Thanks. > > > > > > --------------- > > > Hi list, > > > > > > I have a Apple Inc. MacBookPro11,1 (with the most recent 'bios': > > > BIOS > > > MBP111.88Z.0138.B16.1509081438 09/08/2015). > > > > > > At the beginning, USB worked normally. After a while (and after > > > newer > > > kernel versions released by debian?) things started to act > > > strangely. > > > For > > > one, the bios/efi boot takes a very long time (probably due to > > > the > > > same > > > reason I describe later) just to get to the bootloader/grub. > > > Likley > > > resetting and probing for USB ports/mass storage. When grub > > > finally > > > pops > > > up, I can use the (internal USB based keyboard) normally to > > > select a > > > grub > > > entry etc. > > > > > > Booting the kernel then works reasonably fine, until it loads the > > > xhci > > > module. > > > It spews some messages in dmesg (taking some 15 seconds) and only > > > then, > > > the > > > keyboard starts to work again. > > > > > > The log is filled with messages like: > > > [ 7.248479] xhci_hcd 0000:00:14.0: Command completion event > > > does > > > not > > > match command > > > [ 7.248495] xhci_hcd 0000:00:14.0: Timeout while waiting for > > > setup > > > device command > > > [ 12.256347] xhci_hcd 0000:00:14.0: Timeout while waiting for > > > setup > > > device command > > > [ 12.256363] usb 1-2: hub failed to enable device, error -62 > > > [ 17.264166] xhci_hcd 0000:00:14.0: Timeout while waiting for > > > setup > > > device command > > > (followed by USB hub/device enumeration) > > > > > > I've tried several combinations and quirks, updating to the > > > latest rc > > > kernels since 3.16 (am on 4.5.0 right now) and it only seems to > > > get > > > worse. > > > > > > Last year, on the 3.x series of kernels occasionally after a > > > reboot > > > the > > > 'bios' would go through quickly and fine and also no problems > > > loading > > > the > > > module and logging in. But now it always fails. > > > > > > Additionally it (may or may not) seems to cause the internal usb > > > card > > > reader to not even show up almost all of the time, though under > > > OSX > > > it > > > works fine. There is/was a known issue with this cardreader where > > > it > > > would > > > disappear after a suspend. > > > > > > Adding various seemingly related intel usb3 quirks I had no > > > change, > > > as > > > I > > > think all of them are already applied to this chipset. > > > > > > I'm guessing that somehow the usb chipset has some configuration > > > option > > > miss-set (which persists over reboots/power down) and the driver > > > doesn't > > > quite understand it. > > > > > > Unfortunately it seems that this chipset does not work in pure > > > USB2.0 > > > (ehci) mode and needs the xhci module to work at all, so even > > > falling > > > to > > > USB2 is no option. Also disconnecting all USB perhipials is > > > nearly > > > impossible as the touchpad, bluetooth cardreader and keyboard are > > > internally all wired to USB. > > > > > > I'm attaching 3 dmesg logs with various kernels and levels of > > > debugging > > > information. I tried to google for errors from these logs, but to > > > no > > > avail. > > > > > > I have attached some log files on the bugzilla issue tracker [1] > > > (they > > > are > > > to big for the ML I think). > > > > > > [1] https://bugzilla.kernel.org/show_bug.cgi?id=115741 > > > > > > > > > Olliver > > > > > > > > > > > > [0] http://thread.gmane.org/gmane.linux.usb.general/139697 > > > > I updated to fedora 26 with kernel 4.11.0-rc7 and the issue is > > still > > present. > > 4.11-rc7 should have xhci tracepoints installed. > Could you take some traces at boot with most recent kernel you got. > > xhci traces for boot can be enabled by adding "trace_event=xhci-hcd" > to > your kernel cmdline > > Traces should then appear in /sys/kernel/debug/tracing/trace > > -Mathias Thanks ! I'll try to do that, but it's utterly difficult since each keypress takes between 5 and 10 seconds due to this bug ... So I tried it and I cannot access the trace. Are the trace persisted across reboot ? Since all 4.11 kernel freeze on the login page I have no other choice but rebooting on a old 4.10 kernel to look at the trace. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
