Further potentially useful information about the behavior after PPA
install: If you remove a device via the ui, it leaves a ghosted version
that may or may not be able to reconnect if the device tries to. You
must remove this ghosted device (two removes in total) and then it
appears to allow a
Additionally, I've noted that I really need to disable/re-enable
bluetooth to re-associate with the same device that I've unpaired, even
with PPA. My BT mouse is usable, but significantly more laggy than the
same mouse used via it's 2.4ghz usb, and I use this same model mouse in
BT with win10 and
I also just installed on a pi 4 and had the same issue -- devices worked but
would not persist across reboots, and then successive re-adds were... strange,
unreliable, etc. Lots of "it appears to work but doesn't." Tried the PPA
packages and it worked at first, but was seriously inconsistent
Just following up to note that this still reproduces (cpu core hang and
backtrace) on Eoan with the backport-iwlwifi-dkms package removed.
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@You-Sheng,
I have done that. It has ran all day without issue. Having said that,
I am very confused because I previously had the issue with Eoan with all
updates but no backport-iwlwifi-dkms installed. I don't know what has
changed.
In the apport information, it seems to confirm
Current results...
Eoan iso live boot: cores hang and recover
Eoan install + all updates: cores hang and recover
Eoan install + all updates + backport iwlwifi ppa: cannot associate
Eoan install + all updates + backport iwlwifi from Eoan: Kernel panic
Bionic + all updates: Everything works fine.
I tried the PPA and authentication failed to the network. I think the
applicable messages are as follows:
Dec 11 15:24:28 malt NetworkManager[888]: [1576099468.0140] device
(wlp6s0): supplicant interface state: associating -> associated
Dec 11 15:24:28 malt NetworkManager[888]:
** Attachment added: "Relevant syslog from failed auth."
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1855637/+attachment/5311840/+files/network-auth-fail.log
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** Attachment added: "dmesg showing the boot that used the suggested ppa
backport"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1855637/+attachment/5311841/+files/dmesg.0
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@You-Sheng, I honestly have been VERY out of the loop on linux
kernel/hardware since the 2.4-2.6 days. I've been stuck in AWS for
years ;)
Can you verify I'm understanding the situation correctly? It appears
that the kernel in Eoan contains a driver that contains this issue, and
the
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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https://bugs.launchpad.net/bugs/1855637
Title:
Intel AC 9260 (iwlwifi) completely unstable and halts
Please note that I went ahead and reinstalled on another drive and
completely updated, so there is a system ready to go with this issue--I
just have to boot into it. It's a slow USB external drive, so, gross,
but it works. Also, I'm a former c developer with some kernel dev
experience in the
apport information
** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1855637/+attachment/5311222/+files/WifiSyslog.txt
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apport information
** Attachment added: "CRDA.txt"
https://bugs.launchpad.net/bugs/1855637/+attachment/5311210/+files/CRDA.txt
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apport information
** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1855637/+attachment/5311215/+files/ProcCpuinfo.txt
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apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1855637/+attachment/5311213/+files/Lspci.txt
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apport information
** Attachment added: "Lsusb.txt"
https://bugs.launchpad.net/bugs/1855637/+attachment/5311214/+files/Lsusb.txt
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apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1855637/+attachment/5311218/+files/ProcModules.txt
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apport information
** Attachment added: "RfKill.txt"
https://bugs.launchpad.net/bugs/1855637/+attachment/5311220/+files/RfKill.txt
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apport information
** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1855637/+attachment/5311217/+files/ProcInterrupts.txt
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apport information
** Attachment added: "PulseList.txt"
https://bugs.launchpad.net/bugs/1855637/+attachment/5311219/+files/PulseList.txt
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apport information
** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/1855637/+attachment/5311216/+files/ProcCpuinfoMinimal.txt
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apport information
** Attachment added: "IwConfig.txt"
https://bugs.launchpad.net/bugs/1855637/+attachment/5311212/+files/IwConfig.txt
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apport information
** Attachment added: "AudioDevicesInUse.txt"
https://bugs.launchpad.net/bugs/1855637/+attachment/5311209/+files/AudioDevicesInUse.txt
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apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1855637/+attachment/5311221/+files/UdevDb.txt
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apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1855637/+attachment/5311211/+files/CurrentDmesg.txt
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apport information
** Tags added: apport-collected eoan
** Description changed:
After updating from 18.04 to 19.10, the entire system will freeze and
eventually recover with many dmesg errors with backtraces and all sorts
of errors around the iwlwifi module. I eventually restored to an
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