Hi,
I freshly installed 15.04 about a week ago (my kernel is
19.0-22-generic) and am experiencing similiar behaviour, with some
additional symptoms to those described already:
- When the problem occurs for me, startup time spent on the loading screen
("colored dots") goes up from less than a second to about 1+ minute
- When the login screen is finally reached, I am not able to do anything
(except cut power and hope it does not occur on the next boot) because un- and
re-plugging any usb devices does nothing at all (my keyboard gets power, but is
not recognized, same for mouse)
If I can provide any additional info to help with this, please let me
know. Just like jhe, I didn't yet see any logic regarding how this
problem is triggered so far.
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1435028
Title:
Kernel does not detect already connected USB devices on boot
Status in linux package in Ubuntu:
Confirmed
Bug description:
The kernel does not always detect already connected USB devices on
boot. I have an USB nic and an external mouse connected to my Laptop.
Sometimes these devices are recognized after boot, sometimes they are
missing.
When they are not present after boot you have to unplug them and plug them
again. This is inconvient and adds physical wear on the USB connectors.
The kernel log shows no sign of a disconnect, so it seems the kernel does not
recognize the devices as plugged in on boot.
ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: linux-image-3.19.0-9-generic 3.19.0-9.9
ProcVersionSignature: Ubuntu 3.19.0-9.9-generic 3.19.1
Uname: Linux 3.19.0-9-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.16.2-0ubuntu4
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/pcmC1D0p: jan 1733 F...m pulseaudio
/dev/snd/controlC1: jan 1733 F.... pulseaudio
/dev/snd/controlC0: jan 1733 F.... pulseaudio
CurrentDesktop: GNOME
Date: Sun Mar 22 17:07:16 2015
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-01-30 (50 days ago)
InstallationMedia: Ubuntu-GNOME 14.10 "Utopic Unicorn" - Release amd64
(20141022.1)
MachineType: Dell Inc. XPS 13 9343
ProcEnviron:
TERM=xterm
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=de_DE.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.19.0-9-generic.efi.signed
root=UUID=e4431ecc-e85e-4e35-92af-58f455c46c2b ro kvm-intel.nested=1 quiet
splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-3.19.0-9-generic N/A
linux-backports-modules-3.19.0-9-generic N/A
linux-firmware 1.143
SourcePackage: linux
UpgradeStatus: Upgraded to vivid on 2015-03-19 (3 days ago)
dmi.bios.date: 03/12/2015
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A02
dmi.board.name: 0310JH
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA02:bd03/12/2015:svnDellInc.:pnXPS139343:pvr01:rvnDellInc.:rn0310JH:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: XPS 13 9343
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
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