Confirmed mitigations=off gets things down to 18s in production
environment. I suppose there is still the outstanding question of why
the same python binary is 40% slower on ubuntu24 than ubuntu21, but at
least it isn't 6 times slower or worse.
** Changed in: linux (Ubuntu)
Status: New =>
Looking at the patch between 5.15.0-43-generic and 5.15.0-46-generic, I
saw that some mitigations were introduced. Even though my colleague
indicated he had already determined that mitigations=off did not help, I
decided it was worth double checking.
Using mitigations=off with today's daily serve
The above attachments were collected on a ubuntu20 install booting the
latest hwe kernel. In retrospect, that is probably confusing since the
title of this bug is about ubuntu22. ubuntu 24 server LTS is what I
actually care about. I am happy to gather those attachments on any
OS/kernel combinati
apport information
** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/2083077/+attachment/5824239/+files/WifiSyslog.txt
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Ti
apport information
** Attachment added: "acpidump.txt"
https://bugs.launchpad.net/bugs/2083077/+attachment/5824240/+files/acpidump.txt
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Title:
apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/2083077/+attachment/5824238/+files/UdevDb.txt
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Title:
py
apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/2083077/+attachment/5824237/+files/ProcModules.txt
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apport information
** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/2083077/+attachment/5824236/+files/ProcInterrupts.txt
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apport information
** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/2083077/+attachment/5824235/+files/ProcCpuinfoMinimal.txt
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apport information
** Attachment added: "Lsusb-v.txt"
https://bugs.launchpad.net/bugs/2083077/+attachment/5824234/+files/Lsusb-v.txt
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Title:
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** Attachment added: "Lsusb-t.txt"
https://bugs.launchpad.net/bugs/2083077/+attachment/5824233/+files/Lsusb-t.txt
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** Attachment added: "Lspci-vt.txt"
https://bugs.launchpad.net/bugs/2083077/+attachment/5824232/+files/Lspci-vt.txt
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** Attachment added: "Lspci.txt"
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Title:
pyth
apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/2083077/+attachment/5824230/+files/CurrentDmesg.txt
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apport information
** Tags added: apport-collected focal uec-images
** Description changed:
I suspect this is a kernel bug.
With ubuntu <= 21, I find that this runs in about 13 seconds:
python3 -c "import timeit; print(timeit.Timer('for _ in range(0,1000):
pass').timeit())"
Wi
More data points:
RHEL9 (kernel 5.14.0) w/ HT: 22s
RHEL9 (kernel 5.14.0) w/o HT: 22s
Slackware (kernel 5.15.161) w/ HT: 155s
Slackware (kernel 5.15.161) w/o HT: 22s
ubuntu20 (kernel 5.4.0-196-generic) w/ HT: 14s
ubuntu20 (UPGRADED kernel 5.11.0-22-generic) w/ HT: 19s
ubuntu20 (UPGRADED kernel 5.13
Public bug reported:
I suspect this is a kernel bug.
With ubuntu <= 21, I find that this runs in about 13 seconds:
python3 -c "import timeit; print(timeit.Timer('for _ in range(0,1000):
pass').timeit())"
With ubuntu >= 22, I find that it runs in about 83 seconds.
The problem seems to be specif
The bug is still here (45.6.0) and it's very annoying. My left monitor
is usually in fullscreen mode, so I miss notifications about new mail.
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Title
You have to disable the F1 shortcut in gnome terminal keyboard shortcuts
menu where you turned off the "Enable menu access keys". In the list of
shortcuts look for "Action" Help / Contents. You disable the default
shortcut F1 by selecting the entry and pressing to change it and
then pressing the
Looking into System -> Keyboard Shortcuts I can see now a hint
"To edit a shortcut key, click on the corresponding row and type a new
key combination, or _press *backspace* to clear_."
However the hint didn't make it into shortcut dialog of gnome terminal
and its documentation. It is however docu
This is a tricky one. I was googling it for half an hour and didn't find
a solution. Then by a trial/mistake I found out that if you go to change
the shortcut you want to disable and hit "backspace", it gets disabled!
Hope this helps you guys.
I also think it should be included in the Help provid
Probably same issue on final version Kubuntu 9.10 Karmic - notebook HP Probook
4510s. I installed
http://people.canonical.com/~apw/lp386468-karmic/linux-image-2.6.31-12-generic_2.6.31-12.41lp386468apw1_amd64.deb
from http://people.canonical.com/~apw/lp386468-karmic/ but same problem after
reboot
Public bug reported:
Binary package hint: tcsh
The command "history -S" doesn't save the command history.
** Affects: tcsh (Ubuntu)
Importance: Undecided
Status: Unconfirmed
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history in tcsh doesn't work
https://launchpad.net/bugs/84428
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