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Adel Ahmed
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Joined: 21 Sep 2012
Posts: 1556
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 Posted: Wed Dec 04, 2024 12:05 pm Post subject: mouse and keyboard not working with mdev[solved] |
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I have siwtched from udev to mdev on my virtual machine(on kvm, virtio graphics card)
I then installed xorg-driver and dwm,:
| Code: | [ebuild R ] x11-wm/dwm-6.5::gentoo USE="-savedconfig -xinerama" 0 KiB
[ebuild R ] x11-base/xorg-drivers-21.1-r2::gentoo INPUT_DEVICES="synaptics vmmouse -elographics -evdev -joystick -libinput -void -wacom*" VIDEO_CARDS="-amdgpu -ast -dummy -fbdev (-freedreno) (-geode) -i915 -intel -mga -nouveau (-nvidia) (-omap) -qxl -r128 -radeon -radeonsi -siliconmotion (-tegra) (-vc4) -vesa (-via) (-virtualbox) -vmware" 0 KiB
[ebuild R ] x11-base/xorg-server-21.1.14:0/21.1.14::gentoo USE="minimal xorg -debug -elogind (-selinux) -suid (-systemd) -test -udev -unwind -xcsecurity -xephyr -xnest -xvfb" 0 KiB |
additionally I'm using a startup script I had written:
| Code: | #!/bin/sh
mount /dev/vda1 /
mount -t proc proc /proc
mount -t sysfs sysfs /sys
echo /sbin/mdev > /proc/sys/kernel/hotplug
mdev -s
mount -o remount,rw,noatime /
mkdir /dev/pts
ln -sf /proc/self/fd /dev/fd
mount -t devpts /dev/pts
ifconfig eth0 192.168.122.15/24
route add default gw 192.168.122.1
/etc/startup/ssh
/etc/startup/env
export alias reboot="busybox reboot -f"
exec /bin/busybox init |
when i started dwm using startx /usr/bin/dwm I have no mouse and no keyboard, any help would be appreciated.
thanks
Last edited by Adel Ahmed on Sun Dec 08, 2024 8:54 am; edited 1 time in total |
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GDH-gentoo
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Joined: 20 Jul 2019
Posts: 1777
Location: South America
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| Posted: Wed Dec 04, 2024 12:56 pm Post subject: |
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| Adel Ahmed wrote: | | Code: | | [ebuild R ] x11-base/xorg-server-21.1.14:0/21.1.14::gentoo USE="minimal xorg -debug -elogind (-selinux) -suid (-systemd) -test -udev -unwind -xcsecurity -xephyr -xnest -xvfb" 0 KiB |
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Xorg uses udev for autodetecting the input devices and drivers that it should use. Since you are using mdev, you can't use this feature, so you must explicitly tell all that to Xorg with an xorg.conf file.
See man xorg.conf.
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| NeddySeagoon wrote: | I'm not a witch, I'm a retired electronics engineer  |
| Ionen wrote: | | As a packager I just don't want things to get messier with weird build systems and multiple toolchains requirements though |
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Adel Ahmed
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Joined: 21 Sep 2012
Posts: 1556
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| Posted: Wed Dec 04, 2024 4:10 pm Post subject: |
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I'm drawing a complete blank on how this should be done
I created thsi config file:
| Code: | Section "InputDevice"
Identifier "Keyboard0"
Driver "inputtest"
Option "Device" "/dev/input/event1"
EndSection
Section "InputDevice"
Identifier "mouse"
Driver "synaptics"
Option "Protocol" "auto"
Option "Device" "/dev/input/event2"
Option "ZAxisMapping" "4 5 6 7"
EndSection
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xorg log:
[ 12.382] (==) ModulePath set to "/usr/lib/xorg/modules"
[ 12.382] (==) |-->Input Device "Keyboard0"
[ 12.382] (==) |-->Input Device "Keyboard0"
[ 12.382] (==) No Layout section. Using the first mouse device.
[ 12.382] (==) No Layout section. Using the first keyboard device.
| Code: |
then it seems no driver can be loaded:
[code][ 12.405] (II) LoadModule: "evdev"
[ 12.405] (WW) Warning, couldn't open module evdev
[ 12.405] (EE) Failed to load module "evdev" (module does not exist, 0)
[ 12.405] (EE) No input driver matching `evdev'
[ 12.405] (II) Falling back to input driver `libinput'
[ 12.405] (II) LoadModule: "libinput"
[ 12.405] (WW) Warning, couldn't open module libinput
[ 12.405] (EE) Failed to load module "libinput" (module does not exist, 0)
[ 12.405] (II) LoadModule: "kbd"
[ 12.405] (WW) Warning, couldn't open module kbd
[ 12.405] (EE) Failed to load module "kbd" (module does not exist, 0)
[ 12.405] (EE) No input driver matching `kbd'
[ 12.405] (II) Falling back to input driver `libinput'
[ 12.405] (II) LoadModule: "libinput"
[ 12.405] (WW) Warning, couldn't open module libinput
[ 12.405] (EE) Failed to load module "libinput" (module does not exist, 0)[/code]
I cannot use libinput or evdev, as they require the udev flag in xorg-server |
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GDH-gentoo
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| Posted: Wed Dec 04, 2024 4:42 pm Post subject: |
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What input devices does KVM emulate and what should the corresponding X11 input drivers be? I should have made that my first question.
If you want to stay in a supported configuration, and the correct drivers would be either evdev or libinput (likely), then you are out of luck: both require libudev, so you wouldn't be able to have both mdev and a GUI.
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| NeddySeagoon wrote: | | I'm not a witch, I'm a retired electronics engineer |
| Ionen wrote: | | As a packager I just don't want things to get messier with weird build systems and multiple toolchains requirements though |
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Adel Ahmed
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Joined: 21 Sep 2012
Posts: 1556
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| Posted: Wed Dec 04, 2024 6:04 pm Post subject: |
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keyboard is a ps2 keyboard
ps2 mouse & evtouch usb graphics tablet
I do not mind not being in a supported configuration |
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GDH-gentoo
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| Posted: Wed Dec 04, 2024 7:51 pm Post subject: |
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My preferred unsupported configuration would probably be installing libudev-zero, which is not in Gentoo's repository, reinstalling x11-base/xorg-server-21.1.14 with the udev USE flag set (even if you don't actually have udev), setting INPUT_DEVICES=evdev in /etc/portage/make.conf, and reinstalling affected packages with --changed-use. Which will include x11-base/xorg-drivers.
_________________
| NeddySeagoon wrote: | | I'm not a witch, I'm a retired electronics engineer |
| Ionen wrote: | | As a packager I just don't want things to get messier with weird build systems and multiple toolchains requirements though |
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Adel Ahmed
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Posts: 1556
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| Posted: Thu Dec 05, 2024 11:35 am Post subject: |
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I've emerged xorg-server with the dev flag, tried to get udev running again:
| Code: | root@(none) $ /usr/lib/systemd/systemd-udevd
Using default interface naming scheme 'v253'.
Assertion 'path_is_absolute(p)' failed at src/basic/chase.c:628, function chase(). Aborting.
Aborted
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I also tried the config files in mdev like a boss but I get the same result, no mouse or keyboard in icewm |
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GDH-gentoo
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| Posted: Thu Dec 05, 2024 12:36 pm Post subject: |
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But you shouldn't have /usr/lib/systemd/systemd-udevd since you don't have udev, what are we looking at?
_________________
| NeddySeagoon wrote: | | I'm not a witch, I'm a retired electronics engineer |
| Ionen wrote: | | As a packager I just don't want things to get messier with weird build systems and multiple toolchains requirements though |
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Adel Ahmed
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Posts: 1556
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| Posted: Thu Dec 05, 2024 1:13 pm Post subject: |
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| I'm trying to get either working, udev or mdev |
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GDH-gentoo
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| Posted: Thu Dec 05, 2024 1:45 pm Post subject: |
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You had mdev working when you made your first post, didn't you? Do you not remember what you changed since then, so that you can revert it?
_________________
| NeddySeagoon wrote: | | I'm not a witch, I'm a retired electronics engineer |
| Ionen wrote: | | As a packager I just don't want things to get messier with weird build systems and multiple toolchains requirements though |
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Adel Ahmed
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Posts: 1556
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| Posted: Thu Dec 05, 2024 1:53 pm Post subject: |
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| I have 2 snapshots of this vm, once with mdev working, one with my attempt at getting udev to work, we can go either way |
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Hu
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Joined: 06 Mar 2007
Posts: 22862
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| Posted: Thu Dec 05, 2024 2:27 pm Post subject: |
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Which way would you like to go?
As an aside, I thought you would need to go through the init system to start udevd. Starting it directly may not work. At the very least, that is an unusual way of starting it. |
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Adel Ahmed
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Joined: 21 Sep 2012
Posts: 1556
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| Posted: Thu Dec 05, 2024 3:02 pm Post subject: |
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I would love to do it with mdev, I would also be quite happy with doing it with udev.
yes it's not the regular way to do this I understand, but I'm working on installing gentoo on a 256MB machine and every megabytes is gonna count, if necessary I will re-install openrc.
I would also appreciate any document anyone as on reducing memory footprint, I have this so far:
| Code: | root@(none) $ smem
PID User Command Swap USS PSS RSS
204 root dropbear 0 36 223 740
1 root /bin/busybox init 0 72 307 1000
205 root /bin/sh 0 80 379 1192
21691 root -sh 0 116 439 1276
21690 root dropbear 0 536 723 1240
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GDH-gentoo
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| Posted: Thu Dec 05, 2024 4:25 pm Post subject: |
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If you must put a GUI on it, and want to keep things easy (i. e. deal with the minimum amount of problems you'd have to solve), throw away mdev and call it a day.
If you must keep mdev, be prepared to either do away with a GUI, or maintain a nonstandard Gentoo with an unsupported setup.
I don't think there's a third alternative.
I'm not sure that you can do much with 256MB these days anyway, if you want to use that as a general purpose computer. As opposed to using it for one single dedicated job. Replacing GNU libc with musl is another resource saver, but also creates an additional problem because a lot of software sucks at being portable.
_________________
| NeddySeagoon wrote: | | I'm not a witch, I'm a retired electronics engineer |
| Ionen wrote: | | As a packager I just don't want things to get messier with weird build systems and multiple toolchains requirements though |
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Adel Ahmed
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Posts: 1556
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| Posted: Thu Dec 05, 2024 5:10 pm Post subject: |
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ok let me try and reset things to the way they were with openrc and udev, then I can optimize after I get gui up.
I'm using musl, i was wonder if it would be possible to use dietlibc, and what the benefits in terms of memory consumption would be |
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GDH-gentoo
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| Posted: Thu Dec 05, 2024 9:41 pm Post subject: |
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| Adel Ahmed wrote: | | I'm using musl, i was wonder if it would be possible to use dietlibc, and what the benefits in terms of memory consumption would be |
Well, Gentoo does package dietlibc —it's dev-libs/dietlibc— but a) currently it doesn't have a maintainer, and worse, b) it doesn't satisfy virtual package virtual/libc, so you wouldn't be able to use it as the system libc anyway, unless, again, you enter unsupported setup territory.
_________________
| NeddySeagoon wrote: | | I'm not a witch, I'm a retired electronics engineer |
| Ionen wrote: | | As a packager I just don't want things to get messier with weird build systems and multiple toolchains requirements though |
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Adel Ahmed
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Joined: 21 Sep 2012
Posts: 1556
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| Posted: Sun Dec 08, 2024 7:38 am Post subject: |
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| I have re-installed with udev running as normal and wasa able to startx, thanks for your help I will try switching to mdev now. |
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