On Thu, Apr 26, 2018 at 10:27:17AM +0300, Kyprianos Papadimitriou wrote: > > Thanks for the prompt response! see below > > On 26/04/2018 09:58 πμ, Greg KH wrote: > > On Wed, Apr 25, 2018 at 09:22:47PM +0300, Kyprianos Papadimitriou wrote: > > > Dear sir/madam, > > > > > > I am facing the following problem: > > > > > > My computer randomly stops responding to the usb mouse and keyboard. > > > Unplugging them and plugging them back into a different port does not fix > > > the problem. Sometimes it is fixed after rebooting or after suspending, then > > > turning it on. > > > > > > The problem is related to the Logitech trackman wheel & Mircosoft PS2 > > > Keyboard, both are old. > > > > > > Command "lsusb" for the 2 devices gives: > > > Bus 002 Device 009: ID 046d:c404 Logitech, Inc. TrackMan Wheel > > > Bus 002 Device 010: ID 0a81:0205 Chesen Electronics Corp. PS/2 > > > Keyboard+Mouse Adapter > > So this is a ps2 -> USB adapter for the keyboard, right? > For the keyboard yes, it is ps2->USB. The TrackMan is USB. > > > > > Command "tlp-stat -u" for the 2 devices gives: > > > Bus 002 Device 009 ID 046d:c404 control = on, autosuspend_delay_ms = -1000 > > > -- Logitech, Inc. TrackMan Wheel (usbhid) > > > Bus 002 Device 010 ID 0a81:0205 control = on, autosuspend_delay_ms = -1000 > > > -- Chesen Electronics Corp. PS/2 Keyboard+Mouse Adapter (usbhid) > > > > > > "uname -ra" gives: > > > Linux dell 4.13.0-39-generic #44~16.04.1-Ubuntu SMP Thu Apr 5 16:43:10 UTC > > > 2018 x86_64 x86_64 x86_64 GNU/Linux > > > > > > Can you please help me resolving this issue? > > > > > > I think the problem is not related with autosuspend, but rather with buffer > > > overflow for the specific devices due to that they are not supported in the > > > kernel code. > > Why would something be overflowing? These devices should "just work" as > > this is an old thing. > > > > Have you tried turning autosuspend off for these devices? Lots of old > > USB devices do not like that at all. I don't know what "tlp" does with > > them, but I would suggest blacklisting them from it and see if that > > resolves the issue. > I think I have already done these. > > "control = on" means that autosuspend is off. And when I run command "cat > /sys/module/usbcore/parameters/autosuspend" , this gives -1. > > Finally, in file /etc/default/tlp , I have added the line > USB_BLACKLIST="046d:c404". I then executed "sudo tlp usb" (to apply the > above), and rebooted. > > What more should I do? I really do not know what 'tlp' does, or how it does it at all, sorry. If you disable tlp, does everything work properly? Has this device _ever_ worked properly before on older versions of Linux? Are there any lines in the kernel log for when this happens? If you do this: sudo dmesg -c before anything happens, it will clear out the kernel log. Then, after the problem happens, you can look at the log by doing: dmesg It might be hard to do that if your keyboard is locked up, I know, any way to use another keyboard when that happens? thanks, greg k-h -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
