Thank you kaihengfeng. I'm not sure how I can install a newer version.
It's my company notebook and I'm required to use secure boot and so I
need signed kernels. I'll look for a correct one.
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I reinstalled my notebook. Still have the same problems
** Description changed:
If I do video conferences for example my wifi breaks down. I'm preety
sure the it happens since I updated my WiFi router (FritzBox 7590 to
Firmware 7.20). I was in contact with the manufacturer. They don't know
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I waited some time, updated Ubuntu, kernel, BIOS/firmware and wifi
router. Still have the same problems :-( Will add error report
** Description changed:
If I do video conferences for example my wifi breaks down. I'm preety
sure the it happens since I updated my WiFi router (FritzBox 7590 to
After some time I found this also in the dmesg output:
[ 2005.931734] [ cut here ]
[ 2005.931736] UMAC scan UID 0 status was not cleaned
[ 2005.931777] WARNING: CPU: 4 PID: 1438 at
drivers/net/wireless/intel/iwlwifi/mvm/mac80211.c:1223
__iwl_mvm_mac_stop+0x14f/0x160
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I updated the kernel to 5.4.0-51-generic #56-Ubuntu SMP Mon Oct 5
14:28:49 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux and still have wifi
issues :-(
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** Tags added: apport-collected
** Description changed:
If I do video conferences for example my wifi breaks down. I'm preety
sure the it happens since I updated my WiFi router (FritzBox 7590 to
Firmware 7.20). I was in contact with the manufacturer. They don't know
And here another dmesg output on other event with similar problem
** Attachment added: "another dmesg output on other event with similar problem"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1896904/+attachment/5413802/+files/dmesg12.txt
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Public bug reported:
If I do video conferences for example my wifi breaks down. I'm preety
sure the it happens since I updated my WiFi router (FritzBox 7590 to
Firmware 7.20). I was in contact with the manufacturer. They don't know
any problems.
I checked dmesg and saw a lot of error messages.
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