New monitor, pink vertical line and crazy screen resolution with Evergreen + KMS

[Dave Witbrodt]

Dave Witbrodt wrote:
> 
>> The next items on my list are:
>>
>> A)  Try booting with "radeon.modeset=0".  [Simple idea, but it didn't 
>> occur to me until just now.]
> 
> [As mentioned in previous msg:]
> Using "radeon.modeset=0" eliminates the pink line.  This is not a 
> desirable solution, since I lose KMS and (on Evergreen) my virtual 
> terminals if I start X.
> 
> 
>> B)  Pull the HD 5750 and install my HD 4850.  The older card was 
>> working perfectly with KMS (even with a KVM + Dsub connection!) before 
>> I bought the new card to try out the Evergreen support.  I can try 
>> VGA/Dsub, DVI, and DVI-to-HDMI cables with the old card and see which 
>> permutations (if any) cause the pink vertical line to disappear.  If 
>> no pink line occurs at all, then the problem would seem to be 
>> Evergreen related.
> 
> OK.  Just swapped in the HD 4850 in place of the Evergreen card.  Same 
> kernel (2.6.33 with drm-radeon-testing of 100223 [git 383be5d] merged) 
> and same DVI-to-HDMI converter cable.  Result:  no pink line.
> 
> The problem is with the Evergreen card only.  This means some hardware 
> fault (doubtful) or something lacking in the current Evergreen support.
> 
> Please understand that none of these messages are a complaint.  I am 
> actually ecstatic about all of the efforts of the people working on open 
> source driver support for ATI hardware.  These messages are simply a 
> report about a problem I'm having using my new monitor with 
> drm-radeon-testing.
> 
> 
>> C)  Try a real HDMI cable instead.  I mentioned that I don't own one, 
>> but one is in the mail and should be here early next week.  :)
> 
> Will be a few days before I can test this.  Until then, I'll probably 
> just leave the HD 4850 installed... and enjoy some 2D/3D acceleration 
> once again!  ;)

OK.  HDMI cable arrived, and I have now installed the HD 5750 and 
rebooted.  [Xorg.0.log (compressed) attached.]

Results:

1) Pink vertical line on left side of monitor still there.
2) Monitor OSD info still reports 1922x1200, a seemingly impossible 
video mode!
3) Screen size still altered (either by X server or by radeon):

     $ xdpyinfo | grep -A 2 "screen #0"
     screen #0:
       dimensions:    1920x1200 pixels (508x317 millimeters)
       resolution:    96x96 dots per inch

The screen size ought to be 593x371, and the DPI should be 82.

4) On Saturday, I received a message in reply to this thread from a HD 
5870 user.  I asked him to repeat what he said to me on this list, but 
so far he has not done so.  I am going to defy etiquette/decorum, and 
copy the two sentences that he wrote to me (sorry, Andrew, for doing 
this without permission):

     I also got a (purple?) line with HDMI on the far left my 5870 w/
     kms.
     So you're not crazy  :)

Personal conclusions:

I believe that something is broken in the way that the Evergreen code 
deals with HDMI connections.  My results are with HD 5750, and the other 
  user has HD 5870, so it's not one single card (or even model) that is 
affected.

He and I are both using kernel 2.6.33 with drm-radeon-testing merged in. 
  There are code conflicts which had to be resolved, and it is possible 
(maybe even likely?) that either or both of us made errors in the merge. 
  Speaking for myself, I also have tried a kernel built directly from 
drm-radeon-testing (no merging, no modifications) with identical 
results.  Noob-damaged merges cannot be the only problem, as it turns out.

Except for the impossible 1922 horizontal resolution reported (only 1920 
is _physically_ possible with this hardware) and resulting 2 pixel-wide 
vertical line on the far left of the screen, the picture is just fine.

When I was first experimenting with HD 4850 in November, only software 
rendering was available.  It is surprising how many programs are usable 
without acceleration!  However, I became spoiled once I learned to build 
upstream packages of xf86-video-radeon, libdrm, and mesa.  Since it only 
takes 5-10 minutes for me to swap the HD 5750 in, I think I'll stick 
with the HD 4850 until some more support starts to appear.

I will carry out any direct requests to perform testing with the HD 
5750; I will also be doing testing of my own as I detect any new 
Evergreen support announced (or appearing in git repos).  Thanks again 
for what has been done so far!


Dave W.

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