Using a protocol that does not verify the identity of the server in
any way (AnonTLS that uses Anonymous Diffie Hellman ciphers) can be as
good as no encryption or worse, as it gives users a false sense of
security.
On Sun, Mar 5, 2017 at 11:25 AM, Varstamni Q <1281...@bugs.launchpad.net> wrote:
The upstream bug was reported about 2.5 years ago. It certainly looks
like the developers of Vino are not going to change the default to not
require encryption. Would it be possible to change the default for
Ubuntu to not require encryption at least?
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Public bug reported:
Anonymous Diffie Hellman certificates do not provide identity verification
(unlike x509 certificates). Therefore, while they provide link encryption, they
do not guard against man-in-the-middle attacks. Google decided to drop support
for these certificates in v6.0+
Hi! Please subscribe to this bug and indicate that you are affected to
increase the heat of this bug and confirm that it exists.
Thanks!
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https://bugs.launchpad.net/bugs/1219525
Title:
Public bug reported:
When the Launcher is hidden (System Settings-Appearance-Behavior
-Auto-hide the Launcher-On), when sitting in front of the computer,
one is able to show it by moving the mouse all the way to the left
quickly. When connected over Remote Desktop, one is unable to make the
Public bug reported:
The vnc server x11vnc has a very useful mode which allows a user with
admin sudo privileges (or root) to run x11vnc and to automatically
discover an X Login Greeter. The objective is to be able to login on :0
even when nobody has a login session.
An example commandline for
Please join the bug-report for the new bug related to Kwin not resizing itself
to fit within the NX window.
https://bugs.launchpad.net/ubuntu/+source/libxfixes/+bug/1152754
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This is the patch which upgrades libxfixes3 from Oneiric to Precise
which seems to break kwin's ability to resize.
** Patch added: 01_fixesproto-v6.diff
https://bugs.launchpad.net/ubuntu/+source/libxfixes/+bug/1152754/+attachment/3564241/+files/01_fixesproto-v6.diff
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Public bug reported:
We use KDE under NX, and were happy to discover that the new libxrandr proposed
in this bug-report:
https://bugs.launchpad.net/ubuntu/precise/+source/libxrandr/+bug/985202
fixes the issue of kwin crashing when the NX window resizes.
However, we now discover that it does
I just started a new bug about Kwin not resizing itself to fit within
the NX window (when the NX window is resized). This can be reproduced
when NOT in full-screen only.
Here is a link to the new bug in case people want to follow the developments,
share experiences, and help:
Public bug reported:
We have a system with 64GB of RAM which we have to run with a 32-bit
installation for various reasons. When performing I/O on that system, we
suddenly get Out of memory errors, and if I/O is fast enough (i.e. cat
/dev/zero /dev/shm/somefile), the system becomes unusable very
Would disabling xfixes affect the ability of the window manager to
detect a resize of the NX client window?
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Title:
libx11 causes kwin to crash
Public bug reported:
When iostat is run with the flag -p ALL (for example iostat -xk 1 -p
ALL), on a system with md0 being RAID10 with RAID devices: sda, sdb,
sdc, sdd, sde, sdf, the output looks like this. Note that iostat does
not report any load on the individual partitions on the RAID
Public bug reported:
When iostat is run with the flag -p ALL (for example iostat -xk 1 -p
ALL), on a system with md0 being RAID10 with RAID devices: sda, sdb,
sdc, sdd, sde, sdf, the output looks like this. Note that iostat does
not report any load on the individual partitions on the RAID
significant uptime and NFS traffic over UDP to recur. If we
manage to reproduce the bug on different hardware by generating large
amounts of NFS traffic over UDP, we will advise on how you can reproduce
the bug, and we can try other kernels.
Sincerely,
Iordan Iordanov
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The ubuntu-bug information collection itself also caused the following
two dmesg lines to appear, which do not appear in CurrentDmesg.txt:
[1030231.494607] ACPI Warning: Incorrect checksum in table [OEMB] - 0xF2,
should be 0xEF (20110623/tbutils-314)
[1030231.494860] ACPI Warning: Incorrect
Public bug reported:
We have two systems with a lot of simultaneous KDE sessions which mounts
user data over NFS. We also have two shared servers that only provide
ssh-access (no KDE sessions running), that also mount user data over
NFS. We've had three different machines hang the same way as I'm
A further development. While we were trying to narrow down the problem,
we ruled out routing problems and discovered that NFS over UDP was the
issue.
mount -o rw,udp fileserver:/mount/path /mnt
hangs, whereas
mount -o rw,tcp fileserver:/mount/path /mnt
works. Then we tested pure UDP networking
I've also determined that the size of the file is inconsequential. I
redid the testing with /bin/nc over UDP and over TCP with a 1.2GB file.
The transfer was done from the affected machine to our fileserver. The
result is as follows:
fileserver:/$ ls -l /tmp/test2*
-rw-r--r-- 1 root root
This issue happened early last summer as well, which was with linux-
image-3.2.0-2X-generic-pae. I am not 100% sure how small X was. I
believe the first kernel we went into production with was -23, and it
happened soon afterward, so it was either with 23 or with 24. We have no
real observations
Public bug reported:
A kernel WARNING shows up on our Supermicro H8DGi based system after a
certain amount of uptime. We can't tell whether there is any negative
effect from it as the system stays up.
ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: linux-image-3.2.0-31-generic-pae
Public bug reported:
Steps to reproduce:
(1) As a certain user (userX), launch xvfb using xinit (successfully) thus:
$ /usr/bin/xinit /usr/bin/xterm -- /usr/bin/Xvfb :40 -screen 0
1280x1024x24 -cc 4 -nolisten tcp
[dix] Could not init font path element
I discovered another bug-report which sounds different but is related.
https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/972324
On July 13, 2012, David Lichteblau (david-lichteblau) was the last
person to comment, noting that the issue is because a non-$DISPLAY
specific file owned by
Hi Philip,
As I said, we install the system not with the Debian/Ubuntu installer
but with FAI (which is a system allowing the mass deployment of Ubuntu
installations). We have hundreds of Precise installations performed this
way. I am not sure what you mean by supported, I was just reporting a
Hi Philip,
I am attaching output from a test machine where grub2 was installed to
/dev/md0 and where booting hangs. The RAID1 array is degraded (with
only one member), to keep things simple.
Here is the output of mdadm --detail /dev/md0 on the same machine, so
you can see it is with metadata
I even tried explicitly telling grub2 to load mdraid1x and raid modules
to no avail - it still hangs with a blinking cursor indefinitely when
booting from the drive is attempted:
root@test7:/# grub-install --modules=mdraid1x raid /dev/md0
Installation finished. No error reported.
--
You
Public bug reported:
This is 100% reproducible with metadata 0.9 and 1.0. We are installing a
system with FAI (Fully Automatic Installation), and creating a full disk
RAID1 array with two devices (/dev/sda and /dev/sdb). This results in a
device /dev/md0 which we then label with a GPT label, and
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https://bugs.launchpad.net/bugs/1019389
Title:
Grub 2 hangs on boot after installing on RAID1 device (/dev/md0),
reports no problems during install
To manage notifications about
In case it is relevant, here is a print out of the partition table, even
though (as mention previously), Grub 2 does install successfully when
the raw devices are specified (/dev/sda, /dev/sdb):
# parted /dev/md0 print
Model: Linux Software RAID Array (md)
Disk /dev/md0: 500GB
Sector size
Hi Dmitrijs,
I read the bug-reports that you pointed us to, and my bug-report is definitely
a duplicate of both of them, but combined into one :). We have reconfigured our
system to boot with a degraded RAID, and because the devices have not udevadm
settled yet, we are hit with:
On the other hand, the server which we installed 3.4.0 onto for testing
has been running for 12 days with no similar errors.
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Title:
INFO:
Fortunately, I was able to observe that this is not a regression from
3.2.0-23 to 3.2.0-24. We have a server which is running 3.2.0-23 which
output the same errors. Here is the output in dmesg:
[988120.548020] INFO: rcu_bh detected stall on CPU 1 (t=0 jiffies)
[988120.548041] sending NMI to all
Public bug reported:
We have 3 systems with RAID1 sets which sometimes come up with one
device missing. Attempting to re-add the device fails with:
# mdadm /dev/md2 --re-add /dev/sda6
mdadm: --re-add for /dev/sda6 to /dev/md2 is not possible
# mdadm /dev/md2 --add /dev/sda6
mdadm: /dev/sda6
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https://bugs.launchpad.net/bugs/1014848
Title:
Systems sometimes come up with RAID devices dropped, re-adding fails.
To manage notifications about this bug go to:
Public bug reported:
I noticed an error in dmesg to the effect that mount.nfs was not able to
allocate memory. We auto-mount NFS directories on this system, if that's
relevant. The server has 2GB of RAM and typically has 1.5GB free with
almost no swap used.
ProblemType: Bug
DistroRelease: Ubuntu
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Title:
mount.nfs: page allocation failure: order:4, mode:0xc0d0
To manage notifications about this bug go to:
Hi Joseph,
Unfortunately, on all three systems that we observed this issue, there
was no obvious reason for why it happened and hence we have no way of
reproducing the problem. We are able to test with the latest upstream
kernel only on one of the machines as only one of them is not mission-
Public bug reported:
After running for a while, we receive messages to the effect that
various processes (swapper and ssh-keysign in this case) are stalled on
some CPU. We had not observed this behavior with linux-image-3.2.0-23
-generic-pae, but we may have been lucky rather than this being a
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Title:
INFO: rcu_bh detected stall on CPU 3 (t=0 jiffies)
To manage notifications about this bug go to:
I decided to go try downgrading some libraries to Oneiric to see whether
kwin will stop crashing, and indeed, after downgrading this set of
libraries to the ones from Oneiric:
libx11-6_1.4.4-2ubuntu1_i386.deb
libxdamage1_1.1.3-2_i386.deb
libxext6_1.3.0-3_i386.deb
libxfixes3_5.0-4_i386.deb
Public bug reported:
This behavior is 100% reproducible. I have freenx-server installed from here:
https://launchpad.net/~freenx-team/+archive/ppa
And am logging in from a remote machine with the newest nxclient from
nomachine.org. What happens is that upon login or shortly thereafter,
kwin
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Title:
libx11 causes kwin to crash on login (over NX protocol)
To manage notifications about this bug go to:
Public bug reported:
Binary package hint: linux-image-2.6.32-32-generic
An aspire 5736z-4076 was uncleanly shutdown, and upon startup, there was
an oops with this kernel before fsck of the root partition (/). The oops
specifically mentioned the boot drive of the system as the source of the
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Title:
An aspire 5736z-4076 was uncleanly shutdown, and upon startup, there
was an oops with this kernel before fsck of /
To manage
Public bug reported:
Binary package hint: linux-image-2.6.32-30-generic
This is happening on a Dell Latitude D410 with an Atheros based wireless
adapter installed (ath5K driver).
The interesting thing is that after all these warnings, the machine
still seems to operate normally, including the
** Attachment added: dmesg output
https://bugs.launchpad.net/bugs/790825/+attachment/2149381/+files/BUG_D410.TXT
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Title:
numerous warnings in
I found the same recent module limitation on my dd-wrt router with
kernel 2.4.37. I can't set a hitcount higher than 20!
This means that if I want to consider a larger window of time, like 60
seconds, many legitimate forms of communication would trip the recent
module. Hence, for DoS attacks, I
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