Intel 2.0.0 driver not seeing laptop screen resolutions properly

Keith Packard keithp at
Tue May 8 17:40:19 PDT 2007

On Tue, 2007-05-08 at 16:52 -0700, Eric Anholt wrote:

> Here's a proposed hack to detect your situation and plug in better
> values for the detected panel timings.  If it works, I'll add it.  Note
> that in your case the BIOS gets the right answer (it looks like).
> However, since the BIOS sometimes likes to disappear on us, it's
> probably better to have this hack in place.

That's gross. Reading the BIOS at X server startup time and recording
that seems far more reliable; so far, I don't think we haven't found a
machine that has the BIOS unmapped after boot, just machines that have
it unmapped on resume from S3.

We do need more accurate BIOS table locating code; that seems like a
more tractable problem than quirking the driver to support every weird
machine like this.

keith.packard at
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