Re: [PATCH v2] cirrus-logic-framebuffer-i2c-support.patch

[Krzysztof Halasa <khc@pm.waw.pl>]

"Antonino A. Daplas" <adaplas@pol.net> writes:

> This is no-man's land.  Basically X grabs the VT with KD_GRAPHICS mode
> set.  When in KD_GRAPHICS mode, the framebuffer console will not
> send any commands to the drivers. The problem is trying to do
> framebuffer operation while in X, we don't have any guards on that.
> Just try fbset mymode while in X.

You mean it will not bomb? Good, but still there is I2C question
- can I2C accesses to the graphics chip corrupt X11 and vice versa?
I can't see anything preventing that, and while we can disable
graphic operations while Xserver is running, we can't disable I2C
(non-DDC).

Probably X11 should be disallowed to use I2C directly? I should
probably Cc: this to XOrg as well...
-- 
Krzysztof Halasa
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