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Groups > linux.debian.kernel > #65606 > unrolled thread
| Started by | David Ward <david.ward@ll.mit.edu> |
|---|---|
| First post | 2019-11-10 19:30 +0100 |
| Last post | 2019-11-30 21:40 +0100 |
| Articles | 2 — 1 participant |
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Bug#940726: linux-source-5.2: Enable SOF audio driver and back-port fixes required to 5.2 kernel David Ward <david.ward@ll.mit.edu> - 2019-11-10 19:30 +0100
Bug#940726: linux-source-5.2: Enable SOF audio driver and back-port fixes required to 5.2 kernel David Ward <david.ward@ll.mit.edu> - 2019-11-30 21:40 +0100
| From | David Ward <david.ward@ll.mit.edu> |
|---|---|
| Date | 2019-11-10 19:30 +0100 |
| Subject | Bug#940726: linux-source-5.2: Enable SOF audio driver and back-port fixes required to 5.2 kernel |
| Message-ID | <z108i-5pj-5@gated-at.bofh.it> |
Unfortunately, this has caused a regression. The SST and SOF drivers cannot both be enabled for the same Intel platform in the kernel configuration, according to Intel. https://bugzilla.kernel.org/show_bug.cgi?id=204237#c15 As described in the bug, this change causes a loss of sound on the Intel Broadwell platform (and even significantly degrades system performance when attempting to play sound).
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| From | David Ward <david.ward@ll.mit.edu> |
|---|---|
| Date | 2019-11-30 21:40 +0100 |
| Message-ID | <z8hH3-1SG-5@gated-at.bofh.it> |
| In reply to | #65606 |
On 11/10/19 1:05 PM, David Ward wrote:
> Unfortunately, this has caused a regression. The SST and SOF drivers
> cannot both be enabled for the same Intel platform in the kernel
> configuration, according to Intel.
> https://bugzilla.kernel.org/show_bug.cgi?id=204237#c15
To clarify, the statement above applies to the Baytrail and Broadwell
platforms (only).
These lines that were just added in debian/config/amd64/config need to
be removed:
CONFIG_SND_SOC_SOF_BAYTRAIL_SUPPORT=y
CONFIG_SND_SOC_SOF_BROADWELL_SUPPORT=y
This will be enforced via Kconfig beginning in Linux 5.5-rc1:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=df7257e544faf838c3e7ad6b4e89ffe59e87f5e1
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=a6955fe0e2309feeab5ec71e4b0dcbe498f4f497
The SOF drivers/firmware for the Broadwell and Baytrail platforms have
issues, and Intel does not consider them ready for use in distributions yet:
https://github.com/thesofproject/linux/pull/1382#discussion_r344755772
Thank you.
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