NetBSD Problem Report #56054

From  Sat Mar 13 07:42:27 2021
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Date: Sat, 13 Mar 2021 07:42:26 +0000 (UTC)
Subject: Xorg fails to start with 24-bit wsfb
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>Number:         56054
>Category:       xsrc
>Synopsis:       Xorg fails to start with 24-bit wsfb
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    xsrc-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sat Mar 13 07:45:00 +0000 2021
>Originator:     nia
>Release:        NetBSD 9.1
NetBSD 9.1 amd64
wsfb fails with a 24 bits per pixel vesa framebuffer, but a 24 bits per pixel vesa framebuffer is reasonale.
- Boot NetBSD/amd64 in QEMU.
- Observe that QEMU does not allow "vesa 1024x768x32".
- Type "vesa 1024x768x24" followed by "boot" at the boot prompt.
- Log in as root and type startx.
- Xorg fails to initialize the wsfb driver, with the message "wsfb(0): Specified fbbpp (24) is not a permitted value".
- Observe that "vesa 1024x768x16" works, but is disappointing.

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