** Also affects: linux-firmware (Ubuntu Yakkety)
Importance: Undecided
Status: New
** Also affects: linux-firmware (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: linux-firmware (Ubuntu Xenial)
Importance: Undecided => High
** Changed in: linux-firmware (Ubuntu Xenial)
Status: New => In Progress
** Changed in: linux-firmware (Ubuntu Xenial)
Assignee: (unassigned) => Seth Forshee (sforshee)
** Changed in: linux-firmware (Ubuntu Yakkety)
Importance: Undecided => High
** Changed in: linux-firmware (Ubuntu Yakkety)
Status: New => In Progress
** Changed in: linux-firmware (Ubuntu Yakkety)
Assignee: (unassigned) => Seth Forshee (sforshee)
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-firmware in Ubuntu.
https://bugs.launchpad.net/bugs/1647826
Title:
intel 8260 doesn't work with linux kernel 4.8 when using ucode version
22
Status in linux-firmware package in Ubuntu:
New
Status in linux-firmware source package in Xenial:
In Progress
Status in linux-firmware source package in Yakkety:
In Progress
Bug description:
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.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux-firmware/+bug/1647826/+subscriptions
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