Public bug reported:
At some time (maybe after some resumes from standby), any attempt to
connect certain Ad-Hoc WiFi networks fails. I can still connect access
point networks.
dmesg output is full of wifi firmware related crashes I guess.
Restarting the machine solves the problem, until it
Expired? This bug was there in Ubuntu 9 and is still there in 14.04.
Argh.
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https://bugs.launchpad.net/bugs/404917
Title:
mounted samba shares unavailable after suspend
/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC0: dronus 2912 F pulseaudio
CRDA:
country DE:
(2400 - 2483 @ 40), (N/A, 20)
(5150 - 5250 @ 40), (N/A, 20), NO-OUTDOOR
(5250 - 5350 @ 40), (N/A, 20
/dev/snd/controlC0: dronus 2912 F pulseaudio
CRDA:
country DE:
(2400 - 2483 @ 40), (N/A, 20)
(5150 - 5250 @ 40), (N/A, 20), NO-OUTDOOR
(5250 - 5350 @ 40), (N/A, 20), NO-OUTDOOR, DFS
(5470 - 5725 @ 40), (N/A, 26), DFS
Card0.Amixer.info:
Card hw:0 'PCH
Analog [CX20590 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC0: dronus 2912 F pulseaudio
CRDA:
country DE:
(2400 - 2483 @ 40), (N/A, 20)
(5150 - 5250 @ 40), (N/A, 20), NO-OUTDOOR
(5250
Analog [CX20590 Analog]
Subdevices: 1/1
Subdevice #0: subdevice #0
AudioDevicesInUse:
USERPID ACCESS COMMAND
/dev/snd/controlC0: dronus 2912 F pulseaudio
CRDA:
country DE:
(2400 - 2483 @ 40), (N/A, 20)
(5150 - 5250 @ 40), (N/A, 20), NO-OUTDOOR
(5250
I tried the kernel 4.0.0-04rc7-generic at a newer machine sporting
Ubuntu 14.04.
It was hard to get it swapping as it some applications seems to be
better now on itself, for example the newer Gimp seems to have a
sophisticated virtual image memory by itself, so it almost never causes
swapping
I must admit that while I encountered unresponsive swapping conditions
about once a week, and seen other people encounter it, it is not easy to
recreate them on demand :-)
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Due to the general nature of this bug, log files wouldn't provide any
useful informations.
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https://bugs.launchpad.net/bugs/1447052
Title:
System should never drive into
Still happens on T420s with 3.13.0-51-generic . All symptoms exactly
the same.
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https://bugs.launchpad.net/bugs/1313830
Title:
[Lenovo ThinkPad X230] LCD Backlight dims
Anyone know about the state-of-the-art relating this problems on Windows
or MacOSX ?
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https://bugs.launchpad.net/bugs/1447052
Title:
System should never drive into
Public bug reported:
Even for the newest Ubuntu, even on memory rich high end systems
sporting fast SSD drives, the system can be driven into long time
swapping state with unresponsiveness (jerky mouse movements or no
movement at all, no reaction to clicks and keypresses) easily by naive
everyday
My personal workaround if I know I am doing something risky in respect
to memory usage is to disable swap. The unresponsiveness than still
kicks in (why is that either?) but the oom killer invents and bring down
the runaway application and restores system usability, or the
application kills itself
Thinking about it, it reminds me Douglas Adams' description of Arthur
Dent ordering a decent cup of tea, thereby rendering the spaceships'
computer busy and unresponsive for space navigation purposes.
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There is a new twist to this: The effect can be remedied by using a
shorter USB extension cable. So it is obvious that the crashes result
from bad communication or bad reaction of the device due to insufficent
power.
Question is: Is a misbehaveing USB device like something like bad
hardware, that
Also, I don't think it is related to the machines BIOS. If you like, I
can try to trigger the bug by using the WLAN device on some completely
different machine, would that be feasable for going confirmed ?
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I've installed 3.19.0-031900-generic.
The regression is fixed, partly.
VLC, Chrome and Firefox are able to use it again by their default
settings.
guvcview is not, the preview image is still lacking, however the
warnings have changed, no more 'device busy', but several warnings
instead:
Public bug reported:
The Chicony Electronics Camera (as built into for example Lenovo T420s)
stopped working somewhere between kernel 3.2 and 3.13.
I use both kernels in Ubuntu 12.04, and the camera works with the older
one, so I filed the bug here as I don't know when it stopped working.
The
The kernels tested:
linux-image-3.2.0-76-generic : working great
linux-image-3.13.0-45-generic : not working, 'device busy'
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https://bugs.launchpad.net/bugs/1422680
Title:
Public bug reported:
When using an Logilink USB WiFi stick reported as Ralink Technology,
Corp. RT5372 Wireless Adapter, I ancounter frequent disconnects despite
good wifi signal, and repeated kernel crashes at
rt2x00queue_get_entry+0x24.
The crash may happen from time to time, but can be
This seems to be a regression, that had happened not long ago.
Currently I am experiencing this bug with 3.13.0-44-generic (backported
to Ubuntu 12.04) on a T420s. It applies to the VGA port too.
However, I used external displays from time to time, and do not
experience this bug about two month
Bug was triggered by a more general problem (damaged driver files).
** Changed in: linux (Ubuntu)
Status: Incomplete = Invalid
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This bug got a totally new direction: After trying 'modprobe uvcvideo'
and getting an error message, I looked for the module file, and found
/lib/modules/3.8.13.23/kernel/drivers/media/usb/uvc/uvcvideo.ko as 87920
bytes of zeroes.
Some more modules across drivers/ subtree contained of zeros too.
Public bug reported:
When plugging the Logitech C920 web cam on 3.8.13.23 armhf kernel, it is
intialized. However, no device is created at /dev/video* .
dmesg shows:
[ 612.249822] usb 1-3.1: new high-speed USB device number 6 using s5p-ehci
[ 613.467075] usb 1-3.1: New USB device found,
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