I noticed that my workstation is making random "you have unplugged something" noises so i checked dmesg and found a bunch of
[ 7077.049220] usb 3-11: reset high-speed USB device number 4 using xhci_hcd
[ 7282.339798] usb 3-11: reset high-speed USB device number 4 using xhci_hcd
[ 7614.657507] usb 3-11: reset high-speed USB device number 4 using xhci_hcd
[ 8124.565627] usb 3-11: reset high-speed USB device number 4 using xhci_hcd
[ 8538.743881] usb 3-11: reset high-speed USB device number 4 using xhci_hcd
[ 9052.756210] usb 3-11: reset high-speed USB device number 4 using xhci_hcd
i moved the pc yesterday to hover but ive checked all the leads inside the pc and everthing seems correct. any ideas what it could be?
I would start by unplugging the USB devices, and put it back one by one... to see which has trouble... I have no idea which device 4 is on your PC ^^
1 Like
Bus 003 Device 004: ID 0bda:0151 Realtek Semiconductor Corp. Mass Storage Device (Multicard Reader)
it's my second hand 5.25 bay memory card reader......damn could be busted. or its powering on and off to powersaver
If it did not do that until now ... it should not start "powersaving" is there any media card in it currently?
Can you confirm that the cable is firmly seated on both ends? Mainboard and card reader PCB?
1 Like
its in properly, so i had a look on google and found this
For Ubuntu and Debian, usbcore is compiled in the kernel, so create entries on /etc/modprobe.d will NOT work: we need to change the kernel boot parameters.
Edit the /etc/default/grub file and change the GRUB_CMDLINE_LINUX_DEFAULT line to add the usbcore.autosuspend=-1 option:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash usbcore.autosuspend=-1"
Note that quit splash were already present options. So keep other options you have too.
After save the file, update grub.
sudo update-grub
And reboot.
Now check autosuspend value:
cat /sys/module/usbcore/parameters/autosuspend
And it should display -1.
Hopefully this will fix the problem, if not will call back
Cheers Z0ne for the help
1 Like