Re: [Linux-fbdev-devel] [PATCH] fbdev: find mode with highestrefresh rate in fb_find_mode()

[Antonino A. Daplas]

On Wed, 2007-07-18 at 16:38 +0200, Ondrej Zajicek wrote:
> On Wed, Jul 18, 2007 at 10:41:02AM +0200, Michal Januszewski wrote:
> > Currently if the refresh rate is not specified fb_find_mode() returns
> > the first known video mode with the requested resoluion, which provides
> > no guarantees wrt the refresh rate.  Change this so that the mode with
> > the highest refresh rate is returned instead.
> 
> What refresh rate it sets when used on card or monitor without DDC?

Yes, I noted this also while reviewing patches.  fb_find_mode() is used
predominantly with the 'generic' modedb which contains modes that are
not specific to the card or monitor.  And fb_try_mode() is not a
guarantee that the returned refresh rate will be safe (we have a lot of
drivers that do not check the timings against the display capabilities).

It would be best that fb_find_mode() return the safest refresh rate
(60Hz) instead of the highest.

Tony

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