Nouveau - Feb 2008 - [Bug 14403] New: NV17: LVDS0 is black with Randr 1.2, works when randr 1. 2 is disabled

http://bugs.freedesktop.org/show_bug.cgi?id=14403

           Summary: NV17: LVDS0 is black with Randr 1.2, works when randr
                    1.2 is disabled
           Product: xorg
           Version: git
          Platform: x86 (IA32)
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: phillipezolt at gmail.com
         QAContact: xorg-team at lists.x.org


Created an attachment (id=14176)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=14176)
Xorg.0.log of randr 1.2 initialization

I have a compaq (R3000) laptop with a 
"01:00.0 VGA compatible controller: nVidia Corporation NV17 [GeForce4 440
Go
64M] (rev a3)"

I have an external monitor connected via the VGA port.  The external LCD
monitor is detected by the xserver, and I am able to flip modes with xrandr -s
0. 

The built-in panel on the laptop is simply blank.  The strange thing is that
if I disable 'randr1.2', it works just fine. 


(BTW. randr shows me all of the modes available for BOTH the external and
internal display, so it is doing the detection properly.)

BTW2. It is correct... The panel can handle 1680x1050..

[clmesarita at localhost media]$ env DISPLAY=:0 xrandr
Screen 0: minimum 320 x 200, current 1024 x 768, maximum 1680 x 1680
VGA-0 connected 1024x768+0+0 (normal left inverted right x axis y axis) 304mm x
228mm
   1024x768       60.0*+
   800x600        75.0     60.3  
   640x480        75.0     60.0  
LVDS-0 connected 1024x768+0+0 (normal left inverted right x axis y axis) 331mm
x 207mm
   1680x1050      59.9 +   60.0  
   1360x768       59.8     60.0  
   1280x800       60.0  
   1152x864       60.0  
   1280x768       60.0  
   1280x720       60.0  
   1024x768       60.0* 
   800x600        60.3  
   640x480        59.9  
....

I don't mind hacking around with this... Where is a good place to start?


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--- Comment #1 from Phillip Ezolt <phillipezolt at gmail.com>  2008-02-06
07:27:28 PST ---
Oh, I forgot to add:  If I try to switch modes on the LVDS-0 using 'xrandr
-s
..', nothing changes...  (Still black)

When I return to text mode, things are a shade of green, but I can't
actually
see the cursor. (As if things were shifted or something...)  


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--- Comment #2 from Maarten Maathuis <madman2003 at gmail.com>  2008-02-06
07:45:30 PST ---
Please provide a full log with NOUVEAU_MODESET_TRACE in nv_local.h enabled.

A full log includes a VT switch or shutdown.

A comparison log with randr12 disabled would be nice too.


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--- Comment #3 from Phillip Ezolt <phillipezolt at gmail.com>  2008-02-06
09:36:55 PST ---
Created an attachment (id=14177)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=14177)
randr 1.2 log with debugging turned on


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--- Comment #4 from Phillip Ezolt <phillipezolt at gmail.com>  2008-02-06
09:37:47 PST ---
Created an attachment (id=14178)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=14178)
Defualt log with debugging turned on

Alright, both are attached.  If you need anything else, just ask. 


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--- Comment #5 from Maarten Maathuis <madman2003 at gmail.com>  2008-02-06
11:25:28 PST ---
Does the LVDS work on it's own?


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--- Comment #6 from Phillip Ezolt <phillipezolt at gmail.com>  2008-02-06
11:34:12 PST ---
No, I don't think it does. (I tried it once, and then I plugged in the other
monitor so I could actually interact with the laptop.) 

However, let me just reconfirm that, and submit new logs (rand1.2 and without)
without any external monitor attached.  

(Unfortunately, It'll have to wait until tonight.) 


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Maarten Maathuis <madman2003 at gmail.com> changed:

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




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--- Comment #7 from Phillip Ezolt <phillipezolt at gmail.com>  2008-02-06
16:53:43 PST ---
Created an attachment (id=14187)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=14187)
Non-randr startup using only the laptop screen


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--- Comment #8 from Phillip Ezolt <phillipezolt at gmail.com>  2008-02-06
16:55:19 PST ---
Created an attachment (id=14188)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=14188)
randr1.2 Xorg.0.log using only the laptop screen

Ok. Both of these logs were taken in single user mode after a fresh boot.


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--- Comment #9 from Phillip Ezolt <phillipezolt at gmail.com>  2008-02-06
16:56:26 PST ---
Oh, and as I suspected, the laptop screen still doesn't work (even when the
other monitor is not plugged in.)


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--- Comment #10 from Phillip Ezolt <phillipezolt at gmail.com>  2008-02-11
14:01:22 PST ---
So, I don't know if this is relevant, but I was looking at the log files,
and
it
seems like the pitch and virtual size is screwed up (or at least different) in
the randr dump.

I'm going to try to hard code a Virtual size of 1680x1050, and see if
anything
changes.

no randr:
(--) NOUVEAU(0): Virtual size is 1680x1050 (pitch 1680)
(**) NOUVEAU(0): *Driver mode "1680x1050": 119.0 MHz, 64.7 kHz, 59.9
Hz
(II) NOUVEAU(0): Modeline "1680x1050"  119.00  1680 1728 1760 1840 
1050 1053
1059 1080 +hsync -vsync

....

Randr:
....
(--) NOUVEAU(0): Virtual size is 1680x1680 (pitch 1728)
(**) NOUVEAU(0):  Driver mode "1680x1050": 119.1 MHz (scaled from 0.0
MHz),
64.7 kHz, 59.9 Hz
(II) NOUVEAU(0): Modeline "1680x1050"  119.12  1680 1728 1760 1840 
1050 1052
1058 1080 -hsync -vsync
....


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

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




--- Comment #11 from Stuart Bennett <sb476 at cam.ac.uk>  2008-02-12
18:50:15 PST ---
Hi,

Just to be certain, can you confirm that the external screen works correctly
when using randr1.2?
You say the laptop screen is blank - does it appear to be off (no backlight),
or  black, but still on and backlit?


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--- Comment #12 from Danny <obiwan at mailmij.org>  2008-02-13 02:41:08
PST ---
In reply to #10: the pitch is normal, it is different because you want to
rotate.

Other comments: this issue *seems* to be similar to the one with 12"
powerbooks
(NV34): with rand12, panel does not work. But externally attached (analog)
displays work fine. To me it seems related to the fact that I see that here and
in my logs, the BIOS tells us we are on CRTC 1. This is slightly strange maybe,
but I do not see why it shouldn't work. Of course, I may be wrong and this
can
be a different issue.


danny


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--- Comment #13 from Alexander Clausen <alex at gc-web.de>  2008-02-13
05:44:22 PST ---
i can confirm this issue, at least that the screen stays black; i haven't
tested an external display yet. this is on powerbook g4 17", geforce4 440
go
32m.


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--- Comment #14 from Phillip Ezolt <phillipezolt at gmail.com>  2008-02-13
07:27:40 PST ---
Reply to #11.

Yes, the external monitor works just fine with randr1.2.  I can change
resolutions , and that works, too. 

The laptop screen is on (backlit) but nothing appears on the screen. 

Also (possibly related), the switch back to text mode fails to. I see text that
is tinted green, but I don't see my cursor, and when I type nothing appears
to
change on the screen. 

(once again, I DO see text on the external monitor, and am able to type...) 


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--- Comment #15 from Maarten Maathuis <madman2003 at gmail.com> 
2008-02-13 07:41:35 PST ---
The greenish text/garbage is a sign that the color mode is not correctly set.
Probably indicating a larger problem.


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--- Comment #16 from Stuart Bennett <sb476 at cam.ac.uk>  2008-02-13
09:00:33 PST ---
Please can you:
git clone git://people.freedesktop.org/~airlied/radeontool
git checkout origin/nvidia

then attach to this bug the output of "radeontool regs" when running
nouveau
both in randr12 and non-randr12 modes, when you have booted *without* the
external head attached (doing it remotely is fine, since obviously in the
randr12 case you're blind)


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--- Comment #17 from Phillip Ezolt <phillipezolt at gmail.com>  2008-02-13
17:17:04 PST ---
Ok. I got radeon tool + the nvidia branch.  It was detecting my nvidia bridge
instead of the graphics card.

I had to hard code the base address to 0xe2000000 (the graphic card's MMIO
control register address.) 

I'm pretty sure this is right:

01:00.0 VGA compatible controller: nVidia Corporation NV17 [GeForce4 440 Go
64M] (rev a3) (prog-if 00 [VGA controller])
        Subsystem: Hewlett-Packard Company Unknown device 006d
        Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 22
        Memory at e2000000 (32-bit, non-prefetchable) [size=16M]
        Memory at f0000000 (32-bit, prefetchable) [size=128M]
        Memory at f8000000 (32-bit, prefetchable) [size=512K]
        [virtual] Expansion ROM at f8080000 [disabled] [size=128K]
        Capabilities: [60] Power Management version 2
        Capabilities: [44] AGP version 2.0
        Kernel driver in use: nouveau
        Kernel modules: rivafb, nvidiafb

Anyway.  The reg files for the randr12 and non-randr files are soon to be
attached.  The are both taken after a reboot with NO external monitor
connected. 


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--- Comment #18 from Phillip Ezolt <phillipezolt at gmail.com>  2008-02-13
17:19:53 PST ---
Created an attachment (id=14300)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=14300)
Radeon tool dump of nvidia registers: NO randr 1.2, single head (no external
monitor)

Oh, and my latest test are on nouveau head of line.


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--- Comment #19 from Phillip Ezolt <phillipezolt at gmail.com>  2008-02-13
17:20:45 PST ---
Created an attachment (id=14301)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=14301)
Radeon tool dump of nvidia registers: randr 1.2, single head (no external
monitor)


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--- Comment #20 from Stuart Bennett <sb476 at cam.ac.uk>  2008-02-13
20:18:51 PST ---
Ok, from looking at a quick diff of those, NV_RAMDAC_FP_CONTROL1,
NV_RAMDAC_FP_DEBUG00, and NV_RAMDAC_OUTPUT* stand out as possibly interesting.

Respectively, can you try these:
1) nv_crtc.c:1494
        change regp->fp_control[nv_crtc->head] = 0x00000000;
        for regp->fp_control[nv_crtc->head] = 0x00100000;
2) nv_crtc.c:1696-7
        remove the two lines with PWRDOWN in them
3) nv_output.c:601-2
        swap output_reg[0] for output_reg[1], and vice-versa

One other thing (very unlikely to have an effect) is to avoid the ORing of
pllsel with NV_RAMDAC_PLL_SELECT_VCLK_RATIO_DB2, nv_crtc.c around line 790


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--- Comment #21 from Phillip Ezolt <phillipezolt at gmail.com>  2008-02-14
09:43:59 PST ---
Just to be absolutely sure about what you are asking me to do.

Do you want me to try
#1 
(back out #1) #2
(back out #2) #3

Or do you want me to try:
#1
#1+#2
#1+#2+#3

Either way, I'll take a swing at it tonight. 


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--- Comment #22 from Phillip Ezolt <phillipezolt at gmail.com>  2008-02-15
05:13:26 PST ---
Created an attachment (id=14334)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=14334)
Register dump after all three fixes have been added to head of line

I tried the patches individually (1, 2, 3), and also 1+2, 1+2+3. 

None of them changed things.

I've attached a register dump with ALL three applied.  I haven't had a
chance
to
try the other PLL thing that you suggested. 


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--- Comment #23 from Stuart Bennett <sb476 at cam.ac.uk>  2008-02-15
08:14:12 PST ---
Working from the all three applied state of your last dump, the diff against
no-randr12 shows a few things still, so (on top of the previous changes):
0) do the PLL_SELECT change (unlikely to do anything, but still)
1) nv_crtc.c:1454 regp->fp_vert_regs[REG_DISP_CRTC] = 0x41a;
2) nv_bios.c:2808 
if (pNv->dcb_table.entry[dcb_entry].type == OUTPUT_LVDS)
        (i.e. remove dual_link test)
 & nv_crtc.c:1533 remove "if" test so 
regp->fp_control[nv_crtc->head] |= (8 << 28) is always set
3) nv_bios.c:3152 lvdsmanufacturerindex = 1;


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--- Comment #24 from Phillip Ezolt <phillipezolt at gmail.com>  2008-02-15
17:46:51 PST ---
Success!

If I set the following, 
"3) nv_bios.c:3152 lvdsmanufacturerindex = 1;"

I am able to boot up into X.  I can then use xrandr to switch between
resolutions. 

In fact, that patch is the ONLY one necessary.  I removed all of the others,
and it still works. 

There are still some bugs (for example, my console is messed up when I return
to X), and also a few resolutions (for example 1024x768) are completely
corrupted.

However, I figure I'll wait to report those until you have an
'official' patch
now that we know what the problem is. 


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--- Comment #25 from Danny <obiwan at mailmij.org>  2008-03-05 00:40:24
PST ---
A fix for this has been committed. Does it work for you with latest git?

d.


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Phillip Ezolt <phillipezolt at gmail.com> changed:

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




--- Comment #26 from Phillip Ezolt <phillipezolt at gmail.com>  2008-03-06
06:18:13 PST ---
Yes.  I tried with head as of a day or two ago, and it works now.


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