[Bug 2142298] [NEW] [FFe] Add ability to change UMA carveout BIOS setting
Mario Limonciello
2142298 at bugs.launchpad.net
Fri Feb 20 13:25:12 UTC 2026
Public bug reported:
A new feature coming to kernel 7.0 is the ability to change the amount
of UMA carveout on AMD systems that is programmed in the BIOS.
https://docs.kernel.org/next/gpu/amdgpu/driver-misc.html#uma-carveout
This feature requires a privileged process to write the value. To wrap
up the interface with policy kit it is being brought into fwupd.
https://github.com/fwupd/fwupd/pull/9925
I'm still working on the code review upstream, but I'm expecting we can
merge this upstream and bring it to the stable branch that Ubuntu 26.04
tracks.
** Affects: fwupd (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2142298
Title:
[FFe] Add ability to change UMA carveout BIOS setting
Status in fwupd package in Ubuntu:
New
Bug description:
A new feature coming to kernel 7.0 is the ability to change the amount
of UMA carveout on AMD systems that is programmed in the BIOS.
https://docs.kernel.org/next/gpu/amdgpu/driver-misc.html#uma-carveout
This feature requires a privileged process to write the value. To
wrap up the interface with policy kit it is being brought into fwupd.
https://github.com/fwupd/fwupd/pull/9925
I'm still working on the code review upstream, but I'm expecting we
can merge this upstream and bring it to the stable branch that Ubuntu
26.04 tracks.
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