Nouveau - Mar 2008 - [Bug 14991] New: randr12 not working with nv25

http://bugs.freedesktop.org/show_bug.cgi?id=14991

           Summary: randr12 not working with nv25
           Product: xorg
           Version: unspecified
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: pl4nkton at googlemail.com
         QAContact: xorg-team at lists.x.org


Created an attachment (id=15091)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=15091)
xlog

if randr12 is enabled xserver hung with black screen.
drm debug output is the same as without.

(II) NOUVEAU(0): EDID vendor "ENC", prod id 6022
(II) NOUVEAU(0): nv_analog_output_detect is called.
-- black screen - nothing happen for some time
(II) NOUVEAU(0): Setting owner: 0x0.
(II) NOUVEAU(0): Setting owner: 0x0.
-- still no image - stop x
(II) NOUVEAU(0): NVCloseScreen is called.


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--- Comment #1 from pl4nkton at googlemail.com  2008-03-13 10:05:22 PST ---
Created an attachment (id=15094)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=15094)
xlog randr12 modeset_trace


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Stuart Bennett <sb476 at cam.ac.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |sb476 at cam.ac.uk




--- Comment #2 from Stuart Bennett <sb476 at cam.ac.uk>  2008-03-13
16:21:00 PST ---
I assume the monitor is correctly detected as being attached on DVI-D? Assuming
this is so, this is not expected to work currently on your particular card as a
separate TMDS chip needs programming up, so there's going to be some work in
getting it going.

Do the VGA and DVI-A connections work as expected?


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--- Comment #3 from pl4nkton at googlemail.com  2008-03-18 13:59:10 PST ---
Yes VGA and DVI-A works well. I tried only booting with the screen connected at
boot, but no "hot plugging" and detection while xserver is runing.
Connected with DVI-D the screen stay on but shows only black. The driver
detects the right mode.


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--- Comment #4 from Stuart Bennett <sb476 at cam.ac.uk>  2008-03-26
10:15:50 PST ---
If only the DVI output is used at boot, does it work with nouveau in
non-randr12 mode or the nv driver? If it does:
git clone git://people.freedesktop.org/~airlied/radeontool
git checkout origin/nvidia
make

then run "./radeontool regs > logfile", both when in the working
non-randr12
state, and (if possible) remotely over ssh when in the broken randr12 state,
and attach the logs to this bug.

If nv / non-randr12 doesn't work, but console mode does, comparative
working/non-working dumps would still be useful.


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--- Comment #5 from pl4nkton at googlemail.com  2008-03-26 13:47:00 PST ---
Created an attachment (id=15481)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=15481)
radeontool regs output - different configs

dvi-d works with nv and nouveau no randr12 when the screen is connected from
boot.
this is the dvi-d chip on the card. I'm not sure if I2C is connected but in
the
datasheet is a description of registers.
http://www.siliconimage.com/docs/SiI-DS-0021-E-164.pdf


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--- Comment #6 from Maarten Maathuis <madman2003 at gmail.com>  2008-03-26
14:00:02 PST ---
I think something went wrong, that log is filled mostly with zeros and some
random stuff.


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--- Comment #7 from Stuart Bennett <sb476 at cam.ac.uk>  2008-03-26
14:11:00 PST ---
While bringing up the SIL may be eventually interesting, we first ought to be
able to bring up a display by not breaking the existing setup (as in the
non-randr12 case) -- radeontool dumps should let us do this.

Unfortunately the radeontool dumps you provided are broken, as you have many
nvidia pci devices, and radeontool is somewhat stupid :)

To fix this, change radeontool.c line 501 from
radeon_cntl_mem = map_devince_memory(base,0x700000);

to

radeon_cntl_mem = map_devince_memory(0xe4000000,0x700000);

recompile, and dump again (logfile_nouveau and log_nouv_r12 being the
interesting ones)


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pl4nkton at googlemail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #15481|0                           |1
        is obsolete|                            |




--- Comment #8 from pl4nkton at googlemail.com  2008-03-26 14:47:12 PST ---
Created an attachment (id=15482)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=15482)
radeontool regs output - different configs


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--- Comment #9 from Stuart Bennett <sb476 at cam.ac.uk>  2008-03-26
14:56:30 PST ---
Please make the with-randr12 dump again, with the following change to
nv_output.c:

diff --git a/src/nv_output.c b/src/nv_output.c
index 5841492..a4e1917 100644
--- a/src/nv_output.c
+++ b/src/nv_output.c
@@ -1113,6 +1113,7 @@ void NvSetupOutputs(ScrnInfoPtr pScrn)
                                sprintf(outputname, "DVI-A-%d",
dvia_count++);
                        break;
                case OUTPUT_TMDS:
+                       pNv->dcb_table.entry[i].heads = 2;
                        sprintf(outputname, "DVI-D-%d", dvid_count++);
                        break;
                case OUTPUT_TV:


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--- Comment #10 from Stuart Bennett <sb476 at cam.ac.uk>  2008-03-26
15:24:56 PST ---
Created an attachment (id=15486)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=15486)
Possibility 1

A possible patch (given that the hack in the previous comment fixed it)


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--- Comment #11 from Stuart Bennett <sb476 at cam.ac.uk>  2008-03-26
15:25:23 PST ---
Created an attachment (id=15487)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=15487)
Possibility 2

A second option


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--- Comment #12 from pl4nkton at googlemail.com  2008-03-26 15:38:17 PST ---
Created an attachment (id=15488)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=15488)
xlog randr12, regs

hack from comment 9 make it working


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--- Comment #13 from Stuart Bennett <sb476 at cam.ac.uk>  2008-04-03
15:23:46 PST ---
If you feel like having a poke at some registers, I've a couple of
candidates
-- CR59 and 0x6808c0. What this means in practice, is running *without* the
comment 9 hack, and trying (via ssh) all four combinations of:

./radeontool regset C0:59 M        where M is 0 or 1
and
./radeontool regset 0x6808c0 N     where N is 0 or 0x100

It may not do much, but at least we can discount them afterwards :-)


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--- Comment #14 from pl4nkton at googlemail.com  2008-04-04 04:08:54 PST ---
I can't see any difference. The regs was 1 / 0x100.


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--- Comment #15 from Stuart Bennett <sb476 at cam.ac.uk>  2008-04-26
16:56:33 PST ---
Please test whether it now works with an unmodified copy of the latest code in
git. If it does, testing whether changing between CRTC 0 and 1 with "xrandr
--output DVI-D-0 --mode something --crtc n" works would be a good
additional
test.


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Stuart Bennett <sb476 at cam.ac.uk> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Blocks|                            |14405




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pl4nkton at googlemail.com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED




--- Comment #16 from pl4nkton at googlemail.com  2008-04-27 15:52:53 PST ---
Now it works :) Also switching the crtc. Thank you.


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