mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
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254c8bf42e
Semi automated conversion, in part because Pandoc is kind of buggy for adoc:
Some of the commands were along the lines:
for f in *.md; do pandoc --atx-headers --base-header-level=3 -o ${f%.md}.adoc --wrap=none $f; done
sed -Ei '/\[\[.*\]\]/d' *.adoc
while read -r f; do cat $f; echo; done <f >g
50 lines
1.2 KiB
Plaintext
50 lines
1.2 KiB
Plaintext
=== X11
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Only tested successfully in `x86_64`.
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Build:
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....
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./build -x
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./run
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....
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We don't build X11 by default because it takes a considerable amount of time (~20%), and is not expected to be used by most users: you need to pass the `-x` flag to enable it.
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Inside QEMU:
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startx
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image:x11.png[image]
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More details: https://unix.stackexchange.com/questions/70931/how-to-install-x11-on-my-own-linux-buildroot-system/306116#306116
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Not sure how well that graphics stack represents real systems, but if it does it would be a good way to understand how it works.
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==== X11 ARM
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On ARM, `startx` hangs at a message:
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vgaarb: this pci device is not a vga device
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and nothing shows on the screen, and:
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grep EE /var/log/Xorg.0.log
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says:
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(EE) Failed to load module "modesetting" (module does not exist, 0)
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....
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A friend told me this but I haven't tried it yet:
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* `xf86-video-modesetting` is likely the missing ingredient, but it does not seem possible to activate it from Buildroot currently without patching things.
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* `xf86-video-fbdev` should work as well, but we need to make sure fbdev is enabled, and maybe add some line to the `Xorg.conf`
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