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Hi,
I've been using arch for the last 3 months. My laptop is Asus X453M and previously, arch never recognise my internal card reader. The error message would be something like usb1-4 description error
Yesterday I upgraded to kernel 4.6.1-2 and magically, the card reader was recognised. from dmesg:
[ 3.110339] usb 1-4: new full-speed USB device number 4 using xhci_hcd
and works perfectly !!
BUT, if I shutdown or restart arch and boot into arch again, the card reader is not recognised anymore
Strangely, if I start windows (win10 preinstalled) first, then restart or shutdown and boot into arch, then my card reader will be recognised again.
this is my card-reader description from lspci:
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5286 PCI Express Card Reader (rev 01)
Any ideas how to solve this problem?
Thanks
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You might try something along these lines: http://unix.stackexchange.com/questions … usb-device
The idea is that you force the USB bus to re-enumerate. That stack exchange link has additional links to things you might try.
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Hi ewaller, thanks for the direction. However when I put in those commands, this is what happened:
[bams@archie ~]$ su
Password:
[root@archie bams]# echo suspend > /sys/bus/usb/devices/1-4/power/level
bash: echo: write error: Invalid argument
root is not good enough to perform the command ??
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