Blacklisting the module is not a solution to the problem, it just hides
it.
The problem is still that the state of the back light does not seem to
be properly restored under some conditions.
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Blacklisting prevents you from configuring the back light, e.g. the time
out.
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https://bugs.launchpad.net/bugs/1510344
Title:
Keyboard Backlight Turns on at boot
Status
This is probably related to the change introduced in Linux 4.1. The Dell
keyboard driver can now control various settings about the keyboard
back-light and exposes control devices in /sys to change these settings.
Commit: 6cff8d60aa0aba5583ecda09984dbcb2f24cc28d
Sorry, I cannot comment on that matter. I do not have the setup to test
it any more.
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https://bugs.launchpad.net/bugs/1294283
Title:
Memory balloning in Hyper-V generation
@Joshua do you mean me?
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Title:
Memory balloning in Hyper-V generation 2 does not work
Status in linux package in Ubuntu:
In
That still does not answer if you are asking me to test anything. I
probably do not have anything to add here, especially since I upgraded
the host system to Windows 10 in the mean time, any result would be
therefore not exactly comparable.
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@GaryParr technically the firmware is okay. It is the I2S support in the
Linux kernel that needs to be finished. We should not encourage firmware
trying to distinguish between running Windows or Linux. The current
solution on the XPS 13 really is just a temporary hot-fix until the
kernel support
For me the Vivid kernel works.
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https://bugs.launchpad.net/bugs/1425445
Title:
Regression: 3.16.0-31-generic breaks touchpad on Dell XPS13 (2015)
Status in linux package
As far as I followed upstream, work is being done on this matter in the
Linux kernel, not really in Ubuntu. (Since it is not a packaging bug,
but rather a development task)
Current focus seems to be to make sure audio works in HDA mode. I2S mode
is apparently improved in kernel versions 4.0 and
I happened again after rebooting the first time into the 3.19.0-14
kernel yesterday. So it is not solved yet.
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https://bugs.launchpad.net/bugs/1435028
Title:
Kernel does
I am currently running on 3.19.3 upstream and the bug did not occur. But
I have to point out that the bug only occurred sometimes with the latest
Ubuntu vivid kernel. I do not know yet how to reliably trigger this bug,
it seems it needs some special conditions to happen.
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The issue first happened after upgrading to vivid from utopic. The
utopic kernel did not show this behaviour.
I did a short test with the upstream kernel and the issue could not be
reproduced with it. Booting back into the Ubuntu kernel 3.19.0-9 on the
other hand exhibited this issue again.
**
Public bug reported:
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
It definitely worked before applying the kernel update.
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https://bugs.launchpad.net/bugs/1425445
Title:
Regression: 3.16.0-31-generic breaks touchpad on Dell XPS13 (2015)
N.B.: The two kernel parameters acpi_osi=!Windows 2013 and
psmouse.resetafter=0 as a temporary work around until this bug gets
fixed, the described bug happened without these parameters!
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Public bug reported:
Today’s kernel update breaks the touchpad on the 2015 Dell XPS13. On
3.16.0-30-generic the touchpad worked fine.
Symptoms are that the touchpad stops responding at random times.
A possible cause is this patch:
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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https://bugs.launchpad.net/bugs/1416601
Title:
touchpad does not respond to tap-to-clicks in I2C mode
** Bug watch added: Red Hat Bugzilla #1188439
https://bugzilla.redhat.com/show_bug.cgi?id=1188439
** Also affects: linux via
https://bugzilla.redhat.com/show_bug.cgi?id=1188439
Importance: Unknown
Status: Unknown
** No longer affects: linux
** Also affects:
Going back to kernel 3.16.0-30-generic fixes the problems for now. Given
from the RedHat bug report the problem seems to be present in 3.17
kernel as well. It seems some change between 3.16 and 3.17 caused this
as a regression.
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The touchpad worked fine for me with the utopic kernel (3.16.0-30). Due
to general system stability problems though I upgraded to the current
vivid kernel (3.18.0-12), which seems much more stable in terms of no
CPU/GPU hangs so far, though the above mentioned touchpad problems
happen for me too
Good news, with the daily image of June 14th the problem seems to be
fixed. Thanks for your work.
** Changed in: linux (Ubuntu)
Status: Incomplete = Fix Released
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I tested the daily image from May 5th of Ubuntu Studio. It shows the
same error like the trusty release image.
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https://bugs.launchpad.net/bugs/1315921
Title:
Ubuntu
Satish for your information, utopic has a new upstream version of
efibootmgr included. It might be worth checking if that is fixing your
problem as well.
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Public bug reported:
Using the Ubuntu Studio 14.04 release image (64bit), it is impossible to
boot or install in a Hyper-V generation 2 VM.
Using either option in Grub (install/live system) results in the
attached error screen after the animated Ubuntu Studio boot logo
(plymoth),
It should be
Unable to run apport-collect, the bug happens during boot sequence
before any console is available to the user.
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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apport information
** Description changed:
The generation 2 VM has been assinged a memory range of 512 MiB-4096MiB
with a starting memory of 512 MiB. It should get additional memory when
needed, but the total available memory in the VM stays at the intial 512
MiB and the kernel starts
apport information
** Attachment added: PulseList.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4080760/+files/PulseList.txt
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The problem just reappeared after the latest kernel upgrade. Apport data
is attached.
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Title:
Memory balloning in Hyper-V
apport information
** Attachment added: ProcEnviron.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4080757/+files/ProcEnviron.txt
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apport information
** Attachment added: ProcInterrupts.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4080758/+files/ProcInterrupts.txt
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apport information
** Attachment added: ProcModules.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4080759/+files/ProcModules.txt
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apport information
** Attachment added: UdevLog.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4080762/+files/UdevLog.txt
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apport information
** Attachment added: CurrentDmesg.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4080755/+files/CurrentDmesg.txt
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apport information
** Attachment added: UdevDb.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4080761/+files/UdevDb.txt
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apport information
** Attachment added: ProcCpuinfo.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4080756/+files/ProcCpuinfo.txt
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apport information
** Attachment added: WifiSyslog.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4080763/+files/WifiSyslog.txt
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apport information
** Attachment added: CRDA.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4080754/+files/CRDA.txt
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apport information
** Attachment added: BootDmesg.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4080753/+files/BootDmesg.txt
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apport information
** Attachment added: BootDmesg.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4072956/+files/BootDmesg.txt
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apport information
** Attachment added: ProcCpuinfo.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4072959/+files/ProcCpuinfo.txt
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apport information
** Attachment added: ProcEnviron.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4072960/+files/ProcEnviron.txt
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apport information
** Tags added: apport-collected
** Description changed:
The generation 2 VM has been assinged a memory range of 512 MiB-4096MiB
with a starting memory of 512 MiB. It should get additional memory when
needed, but the total available memory in the VM stays at the intial
apport information
** Attachment added: CurrentDmesg.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4072958/+files/CurrentDmesg.txt
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apport information
** Attachment added: CRDA.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4072957/+files/CRDA.txt
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apport information
** Attachment added: ProcModules.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4072962/+files/ProcModules.txt
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apport information
** Attachment added: ProcInterrupts.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4072961/+files/ProcInterrupts.txt
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apport information
** Attachment added: UdevDb.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4072964/+files/UdevDb.txt
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apport information
** Attachment added: WifiSyslog.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4072966/+files/WifiSyslog.txt
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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apport information
** Attachment added: PulseList.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4072963/+files/PulseList.txt
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apport information
** Attachment added: UdevLog.txt
https://bugs.launchpad.net/bugs/1294283/+attachment/4072965/+files/UdevLog.txt
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After some time the problem reappeared again today. Ballooning worked at
first and the VM got more than the initial memory, but after some time
this double kernel stack traces were back.
The time these end in the kernel log is just determined by the time I
uploaded the kernel log, from my
The newer bug report is a duplicate of this one, not the other way
round.
** This bug is no longer a duplicate of bug 1268833
Wireless not working in 13.10 and 14.04 for rtl8192ce (RTL8188CE)/asus
pce-n15
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*** This bug is a duplicate of bug 902557 ***
https://bugs.launchpad.net/bugs/902557
** This bug has been marked a duplicate of bug 902557
10ec:8176 Wireless not working in 12.04 for rtl8192ce (RTL8188CE)
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Public bug reported:
The generation 2 VM has been assinged a memory range of 512 MiB-4096MiB
with a starting memory of 512 MiB. It should get additional memory when
needed, but the total available memory in the VM stays at the intial 512
MiB and the kernel starts swapping instead of allocating
Trying to reproduce to confirm the length of the error turns out to be a
bit tricky. I currently do not know what exactly triggers this bug.
Simply booting the VM again currently does not show that behaviour. As
it is apparently related to the Hyper-V ballooning driver, maybe the
Hyper-V on Linux
Public bug reported:
System log shows repeated incidents of task systemd-udevd:1906 blocked
for more than 120 seconds.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-17-generic 3.13.0-17.37 [modified:
boot/vmlinuz-3.13.0-17-generic]
ProcVersionSignature: Ubuntu
Public bug reported:
After installing a fresh daily image on a generation 2 Hyper-V VM, the
following two lines appear during start and in the system log:
[ 19.773125] hyperv_fb: Unable to find PCI Hyper-V video
[ 19.773125] hyperv_fb: No memory for framebuffer
The modules does not work, as
apport information
** Tags added: apport-collected
** Description changed:
System log shows repeated incidents of task systemd-udevd:1906 blocked
for more than 120 seconds.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.13.0-17-generic 3.13.0-17.37 [modified:
apport information
** Attachment added: UdevDb.txt
https://bugs.launchpad.net/bugs/1292400/+attachment/4023568/+files/UdevDb.txt
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https://bugs.launchpad.net/bugs/1292400
apport information
** Attachment added: BootDmesg.txt
https://bugs.launchpad.net/bugs/1292400/+attachment/4023560/+files/BootDmesg.txt
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apport information
** Attachment added: ProcModules.txt
https://bugs.launchpad.net/bugs/1292400/+attachment/4023566/+files/ProcModules.txt
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apport information
** Attachment added: ProcCpuinfo.txt
https://bugs.launchpad.net/bugs/1292400/+attachment/4023563/+files/ProcCpuinfo.txt
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apport information
** Attachment added: ProcEnviron.txt
https://bugs.launchpad.net/bugs/1292400/+attachment/4023564/+files/ProcEnviron.txt
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apport information
** Attachment added: WifiSyslog.txt
https://bugs.launchpad.net/bugs/1292400/+attachment/4023570/+files/WifiSyslog.txt
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apport information
** Attachment added: CurrentDmesg.txt
https://bugs.launchpad.net/bugs/1292400/+attachment/4023562/+files/CurrentDmesg.txt
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apport information
** Attachment added: CRDA.txt
https://bugs.launchpad.net/bugs/1292400/+attachment/4023561/+files/CRDA.txt
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https://bugs.launchpad.net/bugs/1292400
apport information
** Attachment added: PulseList.txt
https://bugs.launchpad.net/bugs/1292400/+attachment/4023567/+files/PulseList.txt
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apport information
** Attachment added: UdevLog.txt
https://bugs.launchpad.net/bugs/1292400/+attachment/4023569/+files/UdevLog.txt
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apport information
** Attachment added: ProcInterrupts.txt
https://bugs.launchpad.net/bugs/1292400/+attachment/4023565/+files/ProcInterrupts.txt
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*** This bug is a duplicate of bug 1287398 ***
https://bugs.launchpad.net/bugs/1287398
** This bug has been marked a duplicate of bug 1287398
hyper-v: frame buffer driver not loading in Generation 2 mode
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** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
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https://bugs.launchpad.net/bugs/1292400
Title:
task systemd-udevd:1906 blocked for more than 120
For what it is worth, I notices that normal scrolling with the mouse
wheel works again with the current kernel in trusty (it does not work at
all with the current saucy kernel).
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Hi,
I reported the bug upstream to de...@linuxdriverproject.org.
** Tags added: kernel-bug-reported-upstream
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https://bugs.launchpad.net/bugs/1218995
Title:
Hyper-V
The message: http://driverdev.linuxdriverproject.org/pipermail
/driverdev-devel/2013-September/041312.html
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https://bugs.launchpad.net/bugs/1218995
Title:
Hyper-V
The mainline kernel did not change the behaviour. The bug still exists.
Could the bug be caused by some element in the Ubuntu graphics stack?
** Changed in: linux (Ubuntu)
Status: Incomplete = Confirmed
** Tags added: kernel-bug-exists-upstream
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Public bug reported:
Hyper-V Synthetic Video Frame Buffer Driver was added upstream with
kernel 3.10 (commit:
http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=68a2d20b79b105f02dcbc52c211d7e62f98996b7)
I am running Xubuntu 13.10 in a Hyper-V machine on Windows 8 Pro.
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