On 2014-06-03 10:29, Oliver Neukum wrote:
No, if you are using the current upstream, xhci_hcd can do dynamic
debugging. No need to recompile.
Can you please provide me with instructions (console commands) on how to
enable and capture xhci_hcd dynamic debugging verbatim with the current
upstream (3.15.0-031500rc8)? I don't know what information/logs you
require ... or how to get them.
Regards
Martin
Addendum
I'm really sorry about the way I posted this. This is how my
Upstream-Bugreport to your Mailing-List should have looked like to begin
with. Well, better late than never ...
Summary:
Logitech c920 usb webcam not working when plugged into USB 3.0 port
Description:
My logitech c920 usb webcam doesn't work when connected to my usb 3.0
host controller (Etron EJ168a). When i connect my usb 3.0 stick to the
same port it's recognized and also works - just not the webcam.
disabling usb 3.0 legacy mode (xhci) in my bios doesn't change anything,
it's still used instead of ehci.
Workaround:
When connected to a usb 2.0 port it works perfectly.
Launchpad Bug-Report-Link:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1319443
Kernel-Version:
Linux version 3.15.0-031500rc8-generic (apw@gomeisa) (gcc version 4.6.3
(Ubuntu/Linaro 4.6.3-1ubuntu5) ) #201406012235 SMP Mon Jun 2 02:36:11
UTC 2014
Environment:
Description: Ubuntu 14.04 LTS
Release: 14.04
Bios-Information:
dmi.bios.date: 06/29/2012
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: P2.30
dmi.board.name: Z68 Pro3 Gen3
dmi.board.vendor: ASRock
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: To Be Filled By O.E.M.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrP2.30:bd06/29/2012:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnZ68Pro3Gen3:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: To Be Filled By O.E.M.
dmi.product.version: To Be Filled By O.E.M.
dmi.sys.vendor: To Be Filled By O.E.M.
I know the various logs should be put into the body of the mail but then
it would be blocked by Majordomo ('Message size exceeding 100 000
characters causes blocking'). So I uploaded the following Information to
an external server (pastebin):
Software/lspci-v.for.the.c920/CPU-Info/Module
Information/ioports/iomem/lspci-vvv/Scsi-Info/Interrupts. It is also
attached separately at the Launchpad-Link posted above.
http://pastebin.com/XcDiM83S
Please tell me which commands to run to track down the problem or
provide useful debug-information.
Regards
Martin
--
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
