Control: tag -1 wontfix On Wed, 2021-05-12 at 06:16 +0300, Martin-Éric Racine wrote: > This still applies to current kernels. > > The problem seems to be that kernels after version 3 implement a > memory protection scheme that prevents the framebuffer from being > accessed by both vesafb and X drivers. The Geode X driver does that.
Then this is not a kernel bug. The change was intentional and
documented in the NEWS file along with the option to revert it:
- On most architectures, the /dev/mem device can no longer be used to
access devices that also have a kernel driver. This breaks dosemu
and some old user-space graphics drivers. To allow this, set the
kernel parameter: iomem=relaxed
Ben.
--
Ben Hutchings
Never attribute to conspiracy what can adequately be explained
by stupidity.
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