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apport-collect 1884025
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This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
** Tags added: focal
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https://bugs.launchpad.net/bugs/1884025
Title:
iwlwifi not loading on kernel 5.4.0.37.40
Status in linux package in Ubuntu:
Incomplete
Bug description:
I have a lenovo thinkpad E550 that has had kubuntu installed starting with
18.04, now updated to 20.04, I never had problems with wifi until last kernel
update.
If I boot with 5.4.0-33.37 the wireless connection acts normally, it's mostly
stable and I have no major issues.
If I boot with 5.4.0-37.41 there is a message like this and the wireless
interface is not activated:
[ 16.227170] kernel: iwlwifi 0000:04:00.0: enabling device (0000 -> 0002)
[ 16.227328] kernel: iwlwifi 0000:04:00.0: HW_REV=0xFFFFFFFF, PCI issues?
[ 16.275802] kernel: iwlwifi: probe of 0000:04:00.0 failed with error -5
There are similar issue with previous releases, but none seem to have fixed
the problem, some of the more informatives (apparently it's either a kernel
issue fixed with kernel 5.6 or a firmware loaded incorrectly):
- https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1867026
- https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1865962
System specifications:
System: Host: pc Kernel: 5.4.0-33-generic x86_64 bits: 64 Console: tty 0
Distro: Ubuntu 20.04 LTS (Focal Fossa)
Machine: Type: Laptop System: LENOVO product: 20DF004USP v: ThinkPad E550
serial: ---
Mobo: LENOVO model: 20DF004USP v: SDK0E50510 WIN serial: ---
UEFI [Legacy]: LENOVO v: J5ET54WW (1.25 ) date: 07/18/2016
CPU: Topology: Dual Core model: Intel Core i7-5500U bits: 64 type: MT
MCP L2 cache: 4096 KiB
Speed: 798 MHz min/max: 500/3000 MHz Core speeds (MHz): 1: 798 2:
798 3: 798 4: 798
Network: Device-1: Intel Ethernet I218-V driver: e1000e
IF: enp0s25 state: down mac: 68:f7:28:5f:d7:27
Device-2: Intel Wireless 3160 driver: iwlwifi
IF: wlp4s0 state: up mac: d0:7e:35:84:92:57
IF-ID-1: lxcbr0 state: down mac: 00:16:3e:00:00:00
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