Public bug reported:
The -22 microcode for the intel 8260 wifi adapter has compatibility
issues with Linux Kernel 4.8 under certain hardware configurations.
The iwlwifi module crashes resulting in wifi failing with "device not
ready" and kernel errors reported in dmesg.
[ 10.691115] iwlwifi 0000:6e:00.0: Microcode SW error detected.
Restarting 0x2000000.
Renaming the ucode file at /lib/firmware/iwlwifi-8000C-22.ucode to
fallback to the -21 ucode resolves the issue and wifi begins working
normally again.
This is an issue with Linux kernel 4.8 on both yakkety and xenial, so
the bug doesn't currently affect users on xenial, but will begin to
after the 16.04.2 HWE release. Kernel 4.4 is unaffected because it
doesn't attempt to use the -22 ucode
The failure doesn't necessarily affect all machines of a given model
with the 8260, but I can reproduce it on multiple laptops when 64GB of
RAM are installed (4x16GB). The RAM itself does not appear to be an
issue.
** Affects: linux-firmware (Ubuntu)
Importance: Undecided
Status: New
** Tags: kernel-bug linux-firmware wifi yakkety
** Attachment added: "oryp2_64gb_iwlwifi_dmesg"
https://bugs.launchpad.net/bugs/1647826/+attachment/4788267/+files/oryp2_64gb_iwlwifi_dmesg
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1647826
Title:
intel 8260 doesn't work with linux kernel 4.8 when using ucode version
22
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1647826/+subscriptions
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
