It has been just 1 week since I got the laptop and I am using it. So I
didn't do anything out of sorts. Below is my linux kernel version (the
laptop itself came with OEM Kernel and Ubuntu pre-installed)
$ uname -a
Linux vivek-dev-linux 5.10.0-1049-oem #51-Ubuntu SMP Mon Sep 27 11:01:10 UTC
2021 x86_64 x86_64 x86_64 GNU/Linux
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 20.04.2 LTS (fossa-bulbasaur X55.1)
Release: 20.04
Codename: focal
$ lspci -v
...
72:00.0 Network controller: Qualcomm Device 1101 (rev 01)
Subsystem: Bigfoot Networks, Inc. Device a501
Flags: bus master, fast devsel, latency 0, IRQ 178
Memory at a2500000 (64-bit, non-prefetchable) [size=1M]
Capabilities: <access denied>
Kernel driver in use: ath11k_pci
Kernel modules: ath11k_pci
...
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-5.10 in Ubuntu.
https://bugs.launchpad.net/bugs/1946444
Title:
ath11k_pci firmware crashes under regular usage on Dell XPS 13 9310
(no suspend and resume)
Status in linux-oem-5.10 package in Ubuntu:
New
Bug description:
While I was normally working on my Dell XPS 13 9310 Laptop, noticed
that WiFi suddenly got disconnected. Looking at dmesg, noticed that
the firmware crashed.
(I am also attaching the entire dmesg output as a file to this bug. )
$ dmesg | grep ath11_k
[ 13.826871] ath11k_pci 0000:72:00.0 wlp114s0: renamed from wlan0
[35908.890709] ath11k_pci 0000:72:00.0: firmware crashed: MHI_CB_SYS_ERROR
[36170.055770] ath11k_pci 0000:72:00.0: wmi command 12290 timeout
[36170.055776] ath11k_pci 0000:72:00.0: failed to send WMI_STOP_SCAN_CMDID
[36170.055783] ath11k_pci 0000:72:00.0: failed to stop wmi scan: -11
[36170.055786] ath11k_pci 0000:72:00.0: failed to stop scan: -11
[36170.055788] ath11k_pci 0000:72:00.0: failed to start hw scan: -110
...
...
[36305.230431] ath11k_pci 0000:72:00.0: wmi command 16387 timeout
[36305.230436] ath11k_pci 0000:72:00.0: failed to send WMI_PDEV_SET_PARAM cmd
[36305.230445] ath11k_pci 0000:72:00.0: failed to enable PMF QOS: (-11
I had to reboot the machine at least 2 times before WiFi started
working. In the past, I had noticed WiFi would not work after boot a
couple of times, but this is the first time I am seeing it breaking
under normal, continuous usage. This is a major reliability issue if
WiFi connection keeps breaking in the middle of work like this.
Also, this is somewhat similar to the following bugs, but not exactly
the same:
https://bugs.launchpad.net/ubuntu/+source/linux-oem-5.10/+bug/1944018
(here there is no message 'firmware crashed' but rather some failures
from ath11k_pci. Moreover it occurred during suspend and resume.
Whereas in my case, the last suspend + resume was at least 3 and half
hours before the firmware crash)
https://bugs.launchpad.net/ubuntu/+source/linux-signed-
oem-5.10/+bug/1942060 (here there is 'firmware crashed' message, but
all the error messages after that seem to be different. Moreover it
seems to have occurred 56 seconds after system booted, when WiFi
network was connected. Whereas I had a uptime of 9 hours and about 6
hours after the last WiFi connection).
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-oem-5.10/+bug/1946444/+subscriptions
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