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  1. Bug #556253
  2. Comment #10

Comment 10 for bug 556253

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Martin Pitt (pitti) wrote : Re: [2.6.32-19 regression] Does not check lid status any more, blank screen

Hmm, drm.debug=0x04 under Karmic gives

[ 0.000000] Unknown boot option `drm.debug=0x04': ignoring

I might need to add that after the --, I'll play around with this a bit. But even without this, the karmic kernel is already quite verbose:

[ 5.280551] [drm] TMDS-14: set mode 1280x1024 27
[ 5.545646] [drm] LVDS-8: set mode 1280x800 28
[...]
[ 98.874965] [drm] TMDS-14: set mode 1024x768 2a
[ 99.382981] [drm] LVDS-8: set mode 1024x768 2b

This still exhibited the broken behaviour which the mentioned lid checking patch was fixing, i. e. both monitors got the wrong mode.

I also noticed that with lucid's -19, the VTs/plymouth are in fact working on the DVI, just X switches them off.

As a summary, these are the behaviors:

Karmic (2.6.31):
 - LVDS: 1024x768 (non-native), switched on in both VT and X
 - DVI: 1024x768 (non-native), switched on in both VT and X

Lucid 2.6.32-18:
 - LVDS: switched off in both VT and X
 - DVI: 1280x1024 (native), switched on in both VT and X

Lucid 2.6.32-19:
 - LVDS: 1280x800 (native), switched on in both VT and X
 - DVI: 1280x800 (non-native), switched on in VT, switched off in X