Source: linux Version: 3.2.57-3 Severity: important Hi,
On some laptops such as HP's ZBook 15 that only have USB 3 ports, I can reproducibly make the kernel ignore usb devices, in which case syslog reads as follows: ERROR no room on ep ring ERR: No room for command on command ring device not accepting address 5, error -12 couldn't allocate port 6 usb_device So far I have reproduced it by plugging a USB 2.0 device on any of the ports, by doing it several times (plugging & unplugging) the kernel reaches the state where plugging again any device leads to the above error. Searching for the error message on $subject it shows several reports of the same problem. This problem can no longer be reproduced with a kernel backported from jessie/sid. So, searching a bit on the git log leads to the following commits: "xhci: Reset reserved command ring TRBs on cleanup. " - likely to fix the no room for command bug https://github.com/torvalds/linux/commit/33b2831ac870d50cc8e01c317b07fb1e69c13fe1 "xHCI: add aborting command ring function" - unlikely to be it, but maybe a fix for other bugs https://github.com/torvalds/linux/commit/b92cc66c047ff7cf587b318fe377061a353c120f "xHCI: dynamic ring expansion" - likely to fix other bugs, and maybe help on this one https://github.com/torvalds/linux/commit/8dfec6140fc617b932cf9a09ba46d0ee3f3a7d87 I intend to test those, but sending the report in advance. Cheers, -- Raphael Geissert - Debian Developer www.debian.org - get.debian.net -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
