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** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1953557
Title:
sd card reader runs 100% of time and consumes way too much power
Status in linux package in Ubuntu:
Incomplete
Bug description:
When inspecting the systems power usage trough powertop I recognized
the sd card reader is running 100% of time and consuming between 8 and
16 W on my laptop despite not being even in use. Powertop prints:
11.5 W 100,0% Device USB device:
USB2.0-CRW (Generic)
This problem was not there when inspecting the power usage a few weeks
before. Also when inserting actually a sd-card the power usage shrinks
drastically so it is not even seen in powertop on the first places.
I have tested it with kernel version 5.13.0-21-generic and
5.13.0-22-generic and the problem exists on both, but it seems a bit
worse on 5.13.0-22-generic. I have not configured anything manually
there.
lsusb prints for the sd-card reader the following:
Bus 001 Device 003: ID 0bda:0138 Realtek Semiconductor Corp. RTS5138 Card
Reader Controller
I am using Ubuntu 21.10
Summary:
Ubuntu 21.10
Kernel version: 5.13.0-21-generic and 5.13.0-22-generic tested
What I expected to happen: SD card reader *not* eating up all that power when
not even in use
What happened instead: SD card reader eating up all that power when not even
in use
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