[PATCH 0/1][SRU][OEM-5.10] Add an OEM _OSI string to workaround auto-wakeup
Alex Hung
alex.hung at canonical.com
Sat Jan 16 00:44:44 UTC 2021
BugLink: https://bugs.launchpad.net/bugs/1902577
[Impact]
TGL systems wake up automatically from s2idle when connecting to a docking
station with a monitor. The wake-up events are generated when BIOS sets
ALL_MONITOR_OFF for power-saving on TGL systems.
[Fix]
A BIOS workaround is used to skip ALL_MONITOR_OFF with an _OSI string
"Linux-Dell-USB4-Wakeup".
[Test]
Verified on Dell's TigerLake platforms
[Regression Potential]
Low. This only works on platforms supporting "Linux-Dell-USB4-Wakeup".
No other platforms will be affected.
Note: This patch was sent and merged to OEM-5.6, but BIOS fixes are
not ready and thus this is needed in oem-5.10 too.
Alex Hung (1):
UBUNTU: SAUCE: ACPI: avoid auto-wakeup with an _OSI string
drivers/acpi/osi.c | 6 ++++++
1 file changed, 6 insertions(+)
--
2.25.1
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