** Changed in: linux-firmware (Ubuntu Questing)
Status: In Progress => Fix Released
** Changed in: linux-firmware (Ubuntu Plucky)
Status: In Progress => Fix Released
** Changed in: linux-firmware (Ubuntu Noble)
Status: In Progress => Fix Released
** Changed in: linux-firmware (Ubuntu)
Status: In Progress => Fix Released
** Changed in: linux-hwe-6.14 (Ubuntu Noble)
Status: In Progress => Fix Committed
** Changed in: linux (Ubuntu Plucky)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/2119479
Title:
[SRU][Q/P/N:hwe-6.14] mt7925: Add MBSS support
Status in linux package in Ubuntu:
In Progress
Status in linux-firmware package in Ubuntu:
Fix Released
Status in linux-hwe-6.14 package in Ubuntu:
Invalid
Status in linux source package in Noble:
Won't Fix
Status in linux-firmware source package in Noble:
Fix Released
Status in linux-hwe-6.14 source package in Noble:
Fix Committed
Status in linux source package in Plucky:
Fix Committed
Status in linux-firmware source package in Plucky:
Fix Released
Status in linux-hwe-6.14 source package in Plucky:
Invalid
Status in linux source package in Questing:
In Progress
Status in linux-firmware source package in Questing:
Fix Released
Status in linux-hwe-6.14 source package in Questing:
Invalid
Bug description:
[SRU Justfication]
BugLink: https://bugs.launchpad.net/bugs/2119479
These binary firmware changes are required to fix the following issues
(provided by vendor):
Release Note:
- Fix "PCIE AER: RxErr" issue
- Fix "probe request Supported Rates Listed twice" issue
- with driver patch:
https://patchwork.kernel.org/project/linux-wireless/patch/[email protected]/
- Send Beacon frame (with MBSS IE) to driver directly for mac80211.
- with driver patch:
https://patchwork.kernel.org/project/linux-wireless/patch/[email protected]/
This driver change is also required:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/net/wireless/mediatek/mt76?id=74e756b9e28af3ee94a7ea480bb39694be5fbd96
(applied from https://patchwork.kernel.org/project/linux-
wireless/patch/[email protected]/)
[Impact]
Addresses lack of some WiFi and Bluetooth functionality on mt7925
device and undefined behavior / unreliability when connecting to some
APs. Specifically, this update changes how the beacon frame with MBSS
IE is delivered to the driver, in conjunction with this kernel change:
https://patchwork.kernel.org/project/linux-
wireless/patch/[email protected]/
[Fix]
Apply the following vendor-proposed patches from upstream:
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/mediatek/mt7925?id=2ccae12c4f73bf130143ab7cc9c8546d25faac47
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/commit/mediatek/mt7925?id=ebf45cd0f8d0e98d08e7ecfc10342735425677b1
[Test Case]
Verify that Wifi and BT connections can still be established with the
updated blobs, and verify that MBSS functionality works as expected
[Where problems could occur]
Without these patches, affected wireless adapters connecting to 6GHz
APs that broadcast MBSSID have undefined behavior. In various tests,
it was observed that there were frequent disconnections in cases where
the host was closer in proximity to the AP, but that there were
instances where a connection could be maintained if they were farther
away.
If this firmware is used without
https://patchwork.kernel.org/project/linux-
wireless/patch/[email protected]/
being present in the running kernel, the firmware patch can cause some
such devices to be unable to detect their APs regardless of distance.
This could be perceived as a regression for users who did not observe
this issue due to device positioning (which would be resolved once
they update their kernel to include the related driver patch, which I
will SRU into noble-generic and derivatives).
However, given that the best case behavior for impacted devices
without these patches is undefined behavior at best, I believe they
are necessary/appropriate to SRU.
Regarding the kernel patch - this only adds the required handlers for
MBSS support. If any issues exist in the implementation of those new
functions, the user could experience unexpected behavior when
attempting to use MBSS functionality.
[Other Info]
This update originates from a support request by Nvidia
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