Writing to the Framebuffer

Re:Writing to the Framebuffer by pjc50 on Wednesday April 04, 2018 @05:47PM (#16759503)

Is /dev/fb writing directly to the framebuffer or is there translation going on kernel side? Is the card in VESA / BIOS mode when on a virtual console without X?

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Re:Writing to the Framebuffer by yjftsjthsd-h on Wednesday April 04, 2018 @06:03PM (#16759658)

I think the kernel docs[0] indicate that it's a kernel-managed abstraction?

[0] https://www.kernel.org/doc/Documentation/fb/framebuffer.txt

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Re:Writing to the Framebuffer by Jasper_ on Wednesday April 04, 2018 @06:30PM (#16759884)

VESA / EFI FBs can be used, but usually only as a last resort. On devices with native KMS drivers, there is a compatibility path for /dev/fb. This is why your kernel console is in a resolution bigger than 800x600.

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