Hello. Thank you for the report, sorry about that. I've received one more report of the same issue by email. So this means that the only reliable way is to add a sysfs parameter. I'll send a patch. On Fri, 22 Dec 2023 at 17:32, Uli v. d. Ohe <u-v@xxxxxxxxxxx> wrote: > > I get buggy middle button scrolling behavior on my USB Compact Keyboard > (i.e., "1st gen") with original, unmodified firmware and the patch (of > Sep. 23). > > Sometimes the keyboard sends REL_X events while the middle button is > pressed. Thus the old "workaround" is disabled and middle button > scrolling henceforth exhibits the known buggy behavior. > > Explicitly, I can confirm that the following values occur, leading to > erroneous disabling of the workaround: > > cptkbd_data->middlebutton_state == 1 > usage->type == 2 [i.e., EV_REL] > usage->code == 0 [i.e., REL_X] > > The keyboard is identified by lsusb as: > ID 17ef:6047 Lenovo ThinkPad Compact Keyboard with TrackPoint > > This was tested with kernel 6.1.67 which contains the backported patch > (commit 6e2076cad8873cc2a9f96e4becab35425c3656dc). > > I didn't test the latest patch of Dec. 12. However, I don't expect it to > fix my issue as the only added condition > hdev->product == USB_DEVICE_ID_LENOVO_CUSBKBD > should be satisfied, which I understand is also the intention. > (USB_DEVICE_ID_LENOVO_CUSBKBD == 0x6047, which is the device ID of my > keyboard as reported by lsusb.) > > Best regards, > Uli
