Hi,
On 11-02-18 21:03, Clemens Eisserer wrote:
Hi Gordon,
Is there a way to disable SATA link power management at the kernel command
line?
Start by checking the value of
/sys/class/scsi_host/*/link_power_management_policy
I do / did - the value is changing depending whether the laptop is on
battery or wall power.
When on wall power, it is set to maximum-performance and I don't get
any errors, otherwise the SATA errors start to appear.
Because the value is changed depending on power state (maybe by udev
scripts), it doesn't make sence to set it statically.
The only thing I know of changing that value dynamically is
TLP, do you perhaps have TLP installed?
What I wonder - weren't those changes targeted for Fedora-28?
How did they slip into F27?
Those changes are not in F27 and they do not change the level
depending on battery vs wall power.
Regards,
Hans
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