[Bug 11062] Cannot setup resolution higher than 1024x768 on laptop with ATI Mobility Radeon card

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=11062





------- Comment #16 from lelikv at gmail.com  2007-05-26 07:17 PST -------
(In reply to comment #15)
> (In reply to comment #13)
> > (In reply to comment #12)
> > > (In reply to comment #11)
> > > > (In reply to comment #10)
> > > > > (In reply to comment #9)
> > > > > > (In reply to comment #8)
> > > > > > > can you try adding the 1400x1050 mode to the mode list in the display section
> > > > > > > of config?  e.g.,
> > > > > > > 
> > > > > > > Modes "1400x1050" "1280x1024" "1024x768" "800x600" "640x480"
> > > > > > > 
> > > > > > > Looks like the driver is trying to use 1280x1024.
> > > > > > > 
> > > > > > 
> > > > > I mean that I want to set 1280x1024. But when I used PanelSize option, only
> > > > > left upper corner of screen is displayed and LCD is blinking. 
> > > > 
> > > > Are there any modes that do work on the panel?  Are you sure it's 1400x1050? 
> > > > The bios specifies panel timings and size for 1024x768, so we don't have timing
> > > > information for 1400x1050.  Without that it's guess-work get get proper panel
> > > > timing which is why your get the blinking and such.
> > > > 
> > > Only 1024x768 works correctly. I'm sure, that 1400x1050 is supported by that
> > > panel, because it's SVGA+ 15 inch lcd 1.5 years old. How can I calculate proper
> > > timing values for 1280x1024 resolution? I know about special calculators, but I
> > > don't have any information about that LCD. Any ideas?
> > > 
> > 
> > Alex, one more. Take a look at latest log. It seems,that bios provides timing
> > information for 1280x1024 resolution. But these timing values don't work. 
> > 
> 
> Where do you see that?  The bios have timing info for 1024x768 only:
> 
> (II) RADEON(0): Panel ID string: 1024x768
> (II) RADEON(0): Panel Size from BIOS: 1024x768
> (II) RADEON(0): BIOS provided dividers will be used.
> 
> in your newer log, you force the panel size:
> (**) RADEON(0): Panel size is forced to: 1400x1050
> 
> which attempts to do the right thing based on the current state of the
> hardware, but there is no other timing info in the bios.
> 

I'll try to give additional information. 
1. Panel is not 1024x768,  because I used windows on it with 1280x1024
resolution. I Don't know why ddcprobe reports correct info about supported
resolution, but DDC module ati driver cannot correctly get that information.
2. If force panel size to 1400x1050, then all modes work incorrectly, even
1024x768. Sorry, I misinformed You in previous post.
3.About timings. I found the following line in latest log, and I'm not sure,
who exactly provides these values for 1280x1024 mode. It seems, that on-chip
RMX provides them, but I don't know anything about RMX:
(**) RADEON(0): Panel size is forced to: 1400x1050
(II) RADEON(0): Total number of valid DDC mode(s) found: 0
(II) RADEON(0): Valid mode using on-chip RMX: 1280x1024
(II) RADEON(0): Valid mode using on-chip RMX: 1024x768
(II) RADEON(0): Valid mode using on-chip RMX: 800x600
(II) RADEON(0): Valid mode using on-chip RMX: 640x480
(II) RADEON(0): Total number of valid FP mode(s) found: 4
(--) RADEON(0): Virtual size is 1280x1024 (pitch 1280)
(**) RADEON(0): *Mode "1280x1024": 122.0 MHz (scaled from 0.0 MHz), 64.9 kHz,
60.0 Hz
(II) RADEON(0): Modeline "1280x1024"  122.00  1280 1488 1640 1880  1024 1052
1064 1082


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