Folks, I've got Ubuntu mate 18.04 LTS and recently installed the updates which
brought it upto Kernel 5.4.xxx
This has definitely caused issues with my network speed. It has become
extremely slow. Wifi using Fibre broadband 35Mbps.. Feels like browsing on a
modem.. Is there a fix coming soon..
Oh I see, so this would not have happened with the official dkms
package. Thanks. In that case yes, wont-fix.
** Changed in: backport-iwlwifi-dkms (Ubuntu Bionic)
Status: Triaged => Won't Fix
** Changed in: backport-iwlwifi-dkms (Ubuntu Bionic)
Assignee: Stefan Bader (smb) =>
For the one available in Bionic, version 7906-0ubuntu4~18.04.2 latest
updated for bug 1886911, it compiles, but no ko will be installed.
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Thanks, You-Sheng and Hui, I would suggest (and maybe that is what you meant)
to use dkms (remove or uninstall for the 5.4 kernel version) to drop the built
dkms module from the 5.4 kernel as a first test. That way it is available for
any older kernel as long as they are kept.
If this works and
Hi, on 5.0 or newer kernel, you should not be using backport-iwlwifi-
dkms as all the drivers are already in position. And since latest
version of backport-iwlwifi-dkms in Bionic should be 7906, you should
remove that manually install copy.
** Tags added: hwe-networking-wifi
** Also affects:
And I just have a lenovo laptop which has the same wifi card as yours
(8086:2723), I boot the 5.4.0-42 kernel and use the in-tree iwlwifi
driver + iwlwifi-cc-a0-48.ucode firmware, the network works normally.
So I suggest you temporarily uninstall the iwlwifi dkms and do a test.
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You could compare the dmesg of 5.3 kernel and 5.4 kernel, for those
lines which contains the iwlwifi.
In your 5.4 kernel dmesg:
[2.757791] compat: loading out-of-tree module taints kernel.
[2.757807] compat: module verification failed: signature and/or required
key missing - tainting
** Attachment added: "lspci.5.4.0"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1892163/+attachment/5403213/+files/lspci.out
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** Attachment added: "dmesg.5.4.0"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1892163/+attachment/5403212/+files/dmesg.out
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More info, I am using wifi for the network. 5G
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https://bugs.launchpad.net/bugs/1892163
Title:
Major networking regression linux-image-5.4.0-42-generic
Status in linux
It works super nice, in 5.3.0
in 5.4.0 it just keeps going and going for over 10 minutes before I give
up.
It literally takes seconds in 5.3.0, I can send that one.
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Does "apport-cli --save tmpreport -f -p linux" work for you? The
documentation claims one could then later use that file.
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https://bugs.launchpad.net/bugs/1892163
Title:
Also, running sudo apport-collect will not work since it can't attach to
my firefox not running as root. But I did manage to get an authorization
twice into my cache.
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I'm having lots of troubles with apport-collect since the network is so
bad in 5.4.0, I tried apport-bug --save linux.apport linux, but that
just locks up for 10 minutes.
Is there any way I can run this offline and then send it with 5.3.0?
Or what info do you need that I can run by hand and
Could you please run (while running the 5.4 kernel)
sudo apport-collect -p linux 1892163
That should add more information about hardware and content of logfiles.
Also you could try to enable the PPA where upcoming kernel releases are
made available for testing:
sudo apt-add-repository
** Package changed: linux-signed-hwe-5.4 (Ubuntu) => linux (Ubuntu)
** Also affects: linux (Ubuntu Focal)
Importance: Undecided
Status: New
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