Samsung Galaxy Book 12 - Touchpad no longer works after reconnecting the keyboard cover

Ask Fedora
1

Hej,
if I remove the keyboard cover and then reconnect it, the touchpad no longer works. But the keyboard still works perfectly. The problem can only be solved by restarting Fedora.

The following messages appear in the journalctl:

May 25 14:55:49 localhost.localdomain kernel: usb 1-2: USB disconnect, device number 3
May 25 14:56:03 localhost.localdomain kernel: usb 1-2: new full-speed USB device number 5 using xhci_hcd
May 25 14:56:03 localhost.localdomain kernel: usb 1-2: descriptor type invalid, skip
May 25 14:56:03 localhost.localdomain kernel: usb 1-2: New USB device found, idVendor=04e8, idProduct=a00a, bcdDevice= 1.03
May 25 14:56:03 localhost.localdomain kernel: usb 1-2: New USB device strings: Mfr=0, Product=0, SerialNumber=0
May 25 14:56:04 localhost.localdomain kernel: hid-multitouch 0003:04E8:A00A.0006: failed to fetch feature 8
May 25 14:56:04 localhost.localdomain kernel: hid-multitouch 0003:04E8:A00A.0006: failed to fetch feature 8
May 25 14:56:04 localhost.localdomain kernel: input: HID 04e8:a00a Mouse as /devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/0003:04E8:A00A.0006/input/input26
May 25 14:56:04 localhost.localdomain kernel: input: HID 04e8:a00a Touchpad as /devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.0/0003:04E8:A00A.0006/input/input27
May 25 14:56:04 localhost.localdomain kernel: hid-multitouch 0003:04E8:A00A.0006: input,hiddev96,hidraw0: USB HID v1.12 Mouse [HID 04e8:a00a] on usb-0000:00:14.0-2/input0
May 25 14:56:04 localhost.localdomain kernel: input: HID 04e8:a00a as /devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.1/0003:04E8:A00A.0007/input/input29
May 25 14:56:04 localhost.localdomain kernel: hid-generic 0003:04E8:A00A.0007: input,hidraw1: USB HID v1.12 Keyboard [HID 04e8:a00a] on usb-0000:00:14.0-2/input1
May 25 14:56:04 localhost.localdomain kernel: input: HID 04e8:a00a Consumer Control as /devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.2/0003:04E8:A00A.0008/input/input30
May 25 14:56:04 localhost.localdomain kernel: input: HID 04e8:a00a Wireless Radio Control as /devices/pci0000:00/0000:00:14.0/usb1/1-2/1-2:1.2/0003:04E8:A00A.0008/input/input31
May 25 14:56:04 localhost.localdomain kernel: hid-generic 0003:04E8:A00A.0008: input,hidraw2: USB HID v1.12 Device [HID 04e8:a00a] on usb-0000:00:14.0-2/input2

Does anyone have an idea how to solve the problem?

Thanks!

Regards,
Michael

2

Not a fedora specific problem, I get it too in Debian. If I put the computer to sleep and wake it up the touchpad seems to work again. My dmesg looks like yours, here’s what kernel I’m on:

$ uname -a
Linux host 5.7.0-1-amd64 #1 SMP Debian 5.7.6-1 (2020-06-24) x86_64 GNU/Linux

And I’ve had the same problem across multiple earlier kernels.

Does all your hardware work otherwise? I haven’t been able to make the onboard sound work. (Mine’s the 10, not 12, but the hardware seems more or less the same.)