Re: Serious problem with SATA LPM in F28 on Lenovo 50 series laptops

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Hi,

On 29-04-18 21:03, Alexander Ploumistos wrote:
Hello Hans,

I've just upgraded a G50-30 and like Christian, I can not reproduce the
issue. I logged into MATE and GNOME, played with the brightness settings
while plugged in and on battery, it did not hang.

# cat /sys/class/scsi_host/host*/link_power_management_policy
med_power_with_dipm
med_power_with_dipm


SMART data:

Model Family:     Seagate FireCuda 2.5
Device Model:     ST1000LX015-1U7172
Serial Number:
LU WWN Device Id: 5 000c50 0acde0e96
Firmware Version: SDM1
User Capacity:    1,000,204,886,016 bytes [1.00 TB]
Sector Sizes:     512 bytes logical, 4096 bytes physical
Rotation Rate:    5400 rpm
Form Factor:      2.5 inches
Device is:        In smartctl database [for details use: -P show]
ATA Version is:   ACS-3 T13/2161-D revision 3b
SATA Version is:  SATA 3.1, 6.0 Gb/s (current: 3.0 Gb/s)
Local Time is:    Sun Apr 29 20:48:35 2018 CEST
SMART support is: Available - device has SMART capability.
SMART support is: Enabled

I hope that helps,

It is good to hear that not everyone with a 50 series seems
affected, note though that of the 3 reporters so far only
one can reproduce with the brightness keys and the other
2 see a hard-freeze about once every 24 hours, so you might
be affected but not know it yet.

If you do experience unexplained freezes try disabling the
LPM, see:
https://fedoraproject.org/wiki/Common_F28_bugs#lpm-hang

And then wait for a few days to confirm the freeze is
really gone.

Regards,

Hans
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