@Bryan, do you plan of sending a patch upstream?
To submit your patch, send your patch with the detailed
description/changelog and your Signoff (ending with Signed-off-by: your
name <email>), to the emails listed from ./scripts/get_maintainer.pl
drivers/SUBSYSTEM-DETAILS (the get_maintainer.pl is from the kernel
sources). Once you have sent the patch upstream and it's accepted,
please drop a note here so that we can cherry-pick/include the patch
into Ubuntu kernel.
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specific USB devices disconnect and don't reconnect
Status in linux package in Ubuntu:
Status in linux source package in Yakkety:
2 USB ports randomly disconnect and don't reconnect (it's always the
same two), and in dmesg all I get is
[ 1276.916458] ohci-pci 0000:00:12.0: HcDoneHead not written back; disabled
[ 1276.916467] ohci-pci 0000:00:12.0: HC died; cleaning up
[ 1276.916553] usb 3-1: USB disconnect, device number 2
[ 1277.017302] usb 3-2: USB disconnect, device number 3
This only started happening when Yakkety went to the 4.8 branch, with 4.7
branch this doesn't occur, hence the bug report since it's unlikely that a
hardware failure will only stick to one OS and one branch of the kernel for
that OS. (these USB ports don't randomly die on Windows or BSD, I've tested
that in the past couple of days)
kernel version: 22.214.171.124.27
Description: Ubuntu Yakkety Yak (development branch)
USER PID ACCESS COMMAND
/dev/snd/controlC1: c_smith 2213 F.... pulseaudio
/dev/snd/controlC0: c_smith 2213 F.... pulseaudio
DistroRelease: Ubuntu 16.10
InstallationDate: Installed on 2016-10-03 (0 days ago)
InstallationMedia: Ubuntu-MATE 16.10 "Yakkety Yak" - Alpha amd64 (20161002)
MachineType: Gigabyte Technology Co., Ltd. GA-78LMT-S2
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
Package: linux (not installed)
ProcFB: 0 VESA VGA
root=/dev/mapper/Linux-root ro nomodeset quiet splash vt.handoff=7
ProcVersionSignature: Ubuntu 4.8.0-17.19-generic 4.8.0-rc7
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
Uname: Linux 4.8.0-17-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
dmi.bios.vendor: Award Software International, Inc.
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
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