ACK: [SRU] [E/F/Unstable/OEM-OSP1-B] [PATCH 0/1] Fix broken e1000e that blocks s2idle on X1 Carbon 7th

Kleber Souza kleber.souza at canonical.com
Tue Mar 31 09:44:47 UTC 2020


On 23.03.20 06:22, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1865570
> 
> [Impact]
> Lenovo X1 Carbon 7th can only susped (s2idle) once, subsquent suspends
> are blocked by failed e1000e resume routine.
> 
> [Fix]
> It's not root caused yet by Intel, so disable the s0ix flow on X1 Carbon
> 7th as a temporary workaround.
> 
> [Test]
> After applying the DMI quirk patch, e1000e keeps working, so it doesn't
> block s2idle anymore.
> User also confimred the workaround works.
> 
> [Regression Potential]
> Low. It limits to a specific model, and I can confirm s0ix can still be
> reached withouth this feature.
> 
> Kai-Heng Feng (1):
>   e1000e: Disable s0ix flow for X1 Carbon 7th
> 
>  drivers/net/ethernet/intel/e1000e/netdev.c | 16 ++++++++++++++--
>  1 file changed, 14 insertions(+), 2 deletions(-)
> 

No fix accepted upstream yet and workaround confirmed to work by the
bug reporter.

Acked-by: Kleber Sacilotto de Souza <kleber.souza at canonical.com>



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