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SubjectRe: [PATCH 1/1 2.6.15-rc4-git1] Fixing switch to KD_TEXT, enhanced version
Knut Petersen wrote:
> Every framebuffer driver relies on the assumption that the
> set_par() function of the driver is called before drawing
> functions and other functions dependent on the hardware
> state are executed.
> Whenever you switch from X to a framebuffer console for the
> very first time, there is a chance that a broken X system has
> _not_ set the mode to KD_GRAPHICS, thus the vt and framebuffer
> code executes a screen redraw and several other functions
> before a set_par() is executed. This is believed to be not a
> bug of linux but a bug of X/xdm. At least some X releases
> used by SuSE and Debian show this behaviour.
> There was a 2nd case, but that has been fixed by Antonino
> Daplas on 10-dec-2005.
> This patch allows drivers to set a flag to inform fbcon_switch()
> that they prefer a set_par() call on every console switch,
> working around the problems caused by the broken X releases.
> The flag will be used by the next release of cyblafb and might
> help other drivers that assume a hardware state different to
> the one used by X.
> As the default behaviour does not change, this patch should
> be acceptable to everybody.
> Signed-off-by: Knut Petersen <>

Acked-by: Antonino Daplas <>

Please post a follow up patch to fix the spelling.

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