** Tags added: originate-from-1788206 somerville
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https://bugs.launchpad.net/bugs/1811337
Title:
To reduce the Realtek USB cardreader power consumption
Status in HWE Next:
New
Status in linux package in Ubuntu:
In Progress
Status in linux-oem package in Ubuntu:
New
Bug description:
[Impact]
Realtek USB cardreader consumes more than 1 Watt during long idle if it's not
suspended. And it's runtime PM functions are available after v4.20.
[Fix]
To avoid conflicts, have to backport some patches for mmc core.
[Test]
Note: Inside () are the previous value (non-patch)
Sort idle: 7.76W (7.88)
Long idle: 4.658W (5.79)
S3: 0.5W (0.5)
S5: 0.20W (0.208)
[Regression Potential]
Low, most commits are for rtsx_usb_{sdmmc,ms} and are all small changes.
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