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davidbryant
Apprentice
Joined: 11 Jun 2020
Posts: 167
Location: Canyon Lake, Texas
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 Posted: Tue Feb 22, 2022 9:33 pm Post subject: Strange problems with USB keyboard & mouse |
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I have been working to remove superfluous stuff from my kernel .config file. I got too aggressive about eliminating some items in the USB section -- or maybe in the "input devices" section -- and procuced a kernel that boots just fine, but leaves the mouse & keyboard inoperable.
Fine, I thought to myself. I make a backup file of .config at the end of each day's work. I'll just plug in yesterday's configuration file, which worked just fine, and regenerate the kernel and the associated modules. Oops! The mouse and keyboard still won't work.
Here are the commands I am using.
| Code: | cd /usr/src/linux
cp /home/backup/.config .config
make clean
make -j9
make modules_install
make install |
Is there some other magic I need to use to get my old kernel back?
I did some additional digging around, and it looks as if my problem is with the X-server. Here's the tail-end of the X-server's log fi;le where the mouse and keyboard won't work.
| Code: | [ 39.330] (II) config/udev: Adding input device USB Optical Mouse (/dev/input/mouse0)
[ 39.330] (II) No input driver specified, ignoring this device.
[ 39.330] (II) This device may have been added with another device file.
[ 39.380] (EE) Failed to open authorization file "/var/run/sddm/{a7cc164d-97d5-4c3a-9923-4204fffe56b8}": No such file or directory
[ 49.057] (II) modeset(0): Disabling kernel dirty updates, not required. |
Here's what a successful mouse initialization looks like.
| Code: | [ 40.589] (II) config/udev: Adding input device USB Optical Mouse (/dev/input/event8)
[ 40.589] (**) USB Optical Mouse: Applying InputClass "libinput pointer catchall"
[ 40.589] (II) Using input driver 'libinput' for 'USB Optical Mouse' |
followed by a bunch of stuff about the keyboard.
I appreciate any helpful hints. Thanks!
_________________
David Bryant
Canyon Lake, Texas
Last edited by davidbryant on Mon Feb 28, 2022 3:53 pm; edited 1 time in total |
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pietinger
Moderator
Joined: 17 Oct 2006
Posts: 5600
Location: Bavaria
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| Posted: Tue Feb 22, 2022 9:43 pm Post subject: Re: Strange problems with USB keyboard & mouse |
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| davidbryant wrote: | Here are the commands I am using.
| Code: | cd /usr/src/linux
cp /home/backup/.config .config
make clean
make -j9
make modules_install
make install |
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Thats wrong. Do instead:
| Code: | cd /usr/src/linux
cp /home/backup/.config .config
make oldconfig
make -j9
make modules_install
make install |
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pietinger
Moderator
Joined: 17 Oct 2006
Posts: 5600
Location: Bavaria
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| Posted: Tue Feb 22, 2022 9:52 pm Post subject: |
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P.S.: If you have an USB-Keyboard and an USB-Mouse you need only kernel settings from these two articles:
https://wiki.gentoo.org/wiki/Libinput
https://wiki.gentoo.org/wiki/USB/Guide#Config_options_for_the_kernel
Here is mine:
| Code: | Device drivers ---> Input device support --->
-*- Generic input layer (needed for keyboard, mouse, ...)
[*] Export input device LEDs in sysfs
[ ] Support for memoryless force-feedback devices
[ ] Sparse keymap support library
[ ] Matrix keymap support library
*** Userland interfaces ***
[*] Mouse interface
[*] Provide legacy /dev/psaux device
(1024) Horizontal screen resolution
(768) Vertical screen resolution
[ ] Joystick interface
[*] Event interface
[ ] Event debugging
*** Input Device Drivers ***
[ ] Keyboards ----
[ ] Mice ----
[ ] Joysticks/Gamepads ----
[ ] Tablets ----
... |
and
| Code: | Device drivers ---> HID support --->
[ ] Battery level reporting for HID devices
[*] /dev/hidraw raw HID device support
[ ] User-space I/O driver support for HID subsystem
[*] Generic HID driver
USB HID support --->
[*] USB HID transport layer
[ ] PID device support
[*] /dev/hiddev raw HID device support |
If you have special devices then this could be not enough. |
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davidbryant
Apprentice
Joined: 11 Jun 2020
Posts: 167
Location: Canyon Lake, Texas
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| Posted: Tue Feb 22, 2022 11:23 pm Post subject: I'm still confused |
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OK. I decided to try a different tack, because I noticed that the generic mouse driver used by "X" (libinput) is located in /bin. So I generated an initramfs and booted up (just once) with the initramfs file. Guess what? Now the kernel that used to work, except for the mouse and keyboard, has been healed, and it works OK, even without the initramfs. Why? It doesn't make sense.
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David Bryant
Canyon Lake, Texas |
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davidbryant
Apprentice
Joined: 11 Jun 2020
Posts: 167
Location: Canyon Lake, Texas
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| Posted: Tue Feb 22, 2022 11:32 pm Post subject: Re: Strange problems with USB keyboard & mouse |
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| pietinger wrote: | Thats wrong. Do instead:
| Code: | cd /usr/src/linux
cp /home/backup/.config .config
make oldconfig
make -j9
make modules_install
make install |
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Maybe I didn't make myself clear. "make oldconfig" (or "make olddefconfig") is a script that updates a .config file from an old release (5.15.19 in this case) to a new release (5.15.23). But I updated to 5.15.23 about two weeks ago ... all my recent tweaks have been to 5.15.23, so "oldconfig" wouldn't do anything.
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David Bryant
Canyon Lake, Texas |
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pietinger
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Location: Bavaria
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pietinger
Moderator
Joined: 17 Oct 2006
Posts: 5600
Location: Bavaria
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| Posted: Tue Feb 22, 2022 11:42 pm Post subject: Re: Strange problems with USB keyboard & mouse |
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| davidbryant wrote: | | Maybe I didn't make myself clear. "make oldconfig" (or "make olddefconfig") is a script that updates a .config file from an old release (5.15.19 in this case) to a new release (5.15.23). But I updated to 5.15.23 about two weeks ago ... all my recent tweaks have been to 5.15.23, so "oldconfig" wouldn't do anything. |
You told me, you have done some changes in your kernel config. Now you want to revert that. If you want to be sure you can do a
| Code: | # make distclean
# cp back your backup.config into .config
# make oldconfig
# make ... install ... modules |
(trust me - I know oldconfig; dont use olddefconfig)
P.S.: You need "make oldconfig" every time you give a different .config into your kernel sources than you had before; not only when you update from an older version. Also when you change something. See also in "make help" => "oldconfig - Update current config utilising a provided .config as base" and https://www.kernel.org/doc/html/latest/admin-guide/README.html
P.P.S.: If there was really no change, then "make oldconfig" doesnt hurt. Then it will only tell you that all is ok:
| Code: | /usr/src/linux # make oldconfig
#
# No change to .config
# |
Then you really know there was no change. But you should do it every time, after "playing" with your .config-file  |
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logrusx
Advocate
Joined: 22 Feb 2018
Posts: 2921
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| Posted: Wed Feb 23, 2022 1:36 pm Post subject: Re: I'm still confused |
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| davidbryant wrote: | | OK. I decided to try a different tack, because I noticed that the generic mouse driver used by "X" (libinput) is located in /bin. So I generated an initramfs and booted up (just once) with the initramfs file. Guess what? Now the kernel that used to work, except for the mouse and keyboard, has been healed, and it works OK, even without the initramfs. Why? It doesn't make sense. |
Maybe there were some modules left over from the previous attempts, which messed modules from the current attempt. When you included the appropriate modules in the initramfs, they are no longer loaded from the corresponding /lib/modules. This may also be the reason you went too aggressive with stripping out your kernel. Maybe it looked like it all worked, but it was due to old modules left in /lib/modules, hiding the changes you made.
I don't know if this is the case, just suggesting some considerations for things I fell for doing the same recently.
Regards,
Georgi |
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davidbryant
Apprentice
Joined: 11 Jun 2020
Posts: 167
Location: Canyon Lake, Texas
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| Posted: Wed Feb 23, 2022 4:30 pm Post subject: Re: I'm still confused |
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| logrusx wrote: | ...I don't know if this is the case, just suggesting some considerations for things I fell for doing the same recently.
Regards,
Georgi |
Thank you for the suggestions, Georgi. I believe my problem is related to udev, which I need to understand a bit better. There were some odd error messages (which I can't locate in the log files) that I couldn't read very well -- they disappeared when tty 7 displayed the login screen. And I couldn't switch back to tty 1 bcause the keyboard was dead.
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David Bryant
Canyon Lake, Texas |
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pietinger
Moderator
Joined: 17 Oct 2006
Posts: 5600
Location: Bavaria
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| Posted: Thu Feb 24, 2022 6:34 pm Post subject: |
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For an USB-keyboard and an USB-Mouse you need 3 chapters in kernels "Device Drivers":
1. USB
2. Input
3. HID
The settings for the last two parts I gave you in: https://forums.gentoo.org/viewtopic-p-8692945.html#8692945
Usually all settings for nr. 1 are already done in our AMD64 handbook: https://wiki.gentoo.org/wiki/Handbook:AMD64/Installation/Kernel
Only to be sure ... these MUST be set (enabled) at first:
| Code: | Device Drivers --->
[*] USB support --->
[*] Support for Host-side USB
[*] PCI based USB host interface
[*] USB announce new devices
[*] Enable USB persist by default
[*] USB Monitor
[*] xHCI HCD (USB 3.0) support
Maybe - if you have an old USB 2.0 or 1.1:
[ ] EHCI HCD (USB 2.0) support
[ ] OHCI HCD (USB 1.1) support
I dont believe you have a super old 1.0:
[ ] UHCI HCD (most Intel and VIA) support |
Together with my settings I gave you in my previous post, this MUST enable your mouse and keyboard when using libinput (this is default in gentoo).
I recommend to set all these settings as static [*] and NOT as module <M> |
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