Nouveau - Jan 2009 - [Bug 19356] New: DPMS does not turn off LCD backlight on NV34M [ GeForce FX Go5200]

http://bugs.freedesktop.org/show_bug.cgi?id=19356

           Summary: DPMS does not turn off LCD backlight on NV34M [GeForce
                    FX Go5200]
           Product: xorg
           Version: unspecified
          Platform: PowerPC
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: m at tacker.org
         QAContact: xorg-team at lists.x.org


Expected:
$ xset -display :0 dpms force off
should turn off LCD backlight

Actual Result:
Screen is black, but LCD backlight stays on

Workaround:
Use nv driver, which handles the powersaving correctly.

Extract vom Xorg.0.log:
(II) Loading extension DPMS
(II) NOUVEAU(0): DPMS capabilities: Off; RGB/Color Display
(**) Option "dpms" "true"
(**) NOUVEAU(0): DPMS enabled
(II) NOUVEAU(0): Setting dpms mode 3 on tmds encoder (output 0)
(II) NOUVEAU(0): Setting dpms mode 3 on CRTC 0

Using gentoo ebuilds from 
http://svn.hboeck.de/nouveau-overlay (r60)


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--- Comment #1 from Danny <moondrake at gmail.com>  2009-01-01 18:56:23
PST ---
Can you post full logs? It works fine for me with recent git on the same type
of powerbook.

danny


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--- Comment #2 from Markus Tacker <m at tacker.org>  2009-01-02 02:52:16
PST ---
Created an attachment (id=21626)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=21626)
Xorg.0.log


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Markus Tacker <m at tacker.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #21626|0                           |1
        is obsolete|                            |




--- Comment #3 from Markus Tacker <m at tacker.org>  2009-01-02 06:24:46
PST ---
Created an attachment (id=21630)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=21630)
Xorg.0.log from Xorg 1.5.3


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Markus Tacker <m at tacker.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #21630|application/octet-stream    |text/plain
          mime type|                            |




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--- Comment #4 from Danny <moondrake at gmail.com>  2009-01-02 19:48:16
PST ---
Interesting. I suspected you had a 12" powerbook because those contain
nv34m,
but your logs show you are using a pp64 kernel and your flatpanel is an
external one. So I guess you are on a G5 with an nv34m? Can you describe your
setup??I thought those machines had nv4x only. Some assumptions in the driver
may not hold. 

Since nv works correctly, it should be fixable though. Maybe we need another
quirk. What is your exact pci id (nvclock can tell you) it seems with the
recent removal of all the debug stuff from the logging there is hardly anything
useful in the log now...


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--- Comment #5 from Markus Tacker <m at tacker.org>  2009-01-03 03:28:07
PST ---
(In reply to comment #4)
> Can you describe your setup?
It's a third generation iMac (Rev A aka G5).

cpuinfo:
processor       : 0
cpu             : PPC970FX, altivec supported
clock           : 1800.000000MHz
revision        : 3.0 (pvr 003c 0300)
timebase        : 33333333
platform        : PowerMac
model           : PowerMac8,1
machine         : PowerMac8,1
motherboard     : PowerMac8,1 MacRISC4 Power Macintosh 
detected as     : 338 (iMac G5)
pmac flags      : 00000000
L2 cache        : 512K unified
pmac-generation : NewWorld
> What is your exact pci id
Does this help?

# nvclock -i
-- General info --
Card:           nVidia GeForce FX 5200 (Mac)
Architecture:   NV34 B1
PCI id:         0x329
GPU clock:      261.000 MHz
Bustype:        AGP

-- Memory info --
Amount:         64 MB
Type:           128 bit DDR
Clock:          513.000 MHz

-- AGP info --
Status:         Disabled
Rate:           0X
AGP rates:      4X 8X
Fast Writes:    Disabled
SBA:            Disabled


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--- Comment #6 from Markus Tacker <m at tacker.org>  2009-01-03 03:28:33
PST ---
Created an attachment (id=21641)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=21641)
xorg.conf in use


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--- Comment #7 from Danny <moondrake at gmail.com>  2009-01-03 08:44:59
PST ---
Lets first check the ppc specific hack we have now. Can you install radeontool:

git clone git://people.freedesktop.org/~airlied/radeontool
git checkout origin/nvidia
make (if there's problems with the asm/page.h include, comment it out)

then examine the contents of the following 2 regs:
./radeontool regmatch 0x0060081c
./radeontool regmatch 0x000010f0

under both nv and nouveau, with panel off and panel on (to get the reg during
panel off you can try an ssh connection from another machine, or maybe xset
dpms force off;sleep 5; ./radeontool regmatch 0x000010f0
or something like that.

d.


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--- Comment #8 from Markus Tacker <m at tacker.org>  2009-01-04 04:33:53
PST ---
(In reply to comment #7)
> then examine the contents of the following 2 regs:
> ./radeontool regmatch 0x0060081c
> ./radeontool regmatch 0x000010f0
++ nouveau

dpms force on

(changes between those two)
0x0060081c      0x22265055 (572936277)
0x0060081c      0x22265051 (572936273)

0x000010f0      0x83e60535 (-2082077387)

dpms force off

(changes between those two)
0x0060081c      0x22265055 (572936277)
0x0060081c      0x22265051 (572936273)

0x000010f0      0x83e60535 (-2082077387)

++ nv

dpms force on

(changes between those two)
0x0060081c      0x22265055 (572936277)
0x0060081c      0x22265051 (572936273)

0x000010f0      0x83e60535 (-2082077387)

dpms force off

0x0060081c      0x22265050 (572936272)

0x000010f0      0x03e60535 (65406261)


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--- Comment #9 from Danny <moondrake at gmail.com>  2009-01-04 21:34:27
PST ---
thanks. This looks good, it is not working as expected. Later today I will try
to figure out why.

danny


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--- Comment #10 from Danny <moondrake at gmail.com>  2009-01-05 06:58:22
PST ---
Created an attachment (id=21686)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=21686)
mac backlight

Can you try attached patch? I did it rather quickly so I am not sure it will
work at all.

If it fails, can you check the regs again with the patch applied?

danny


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--- Comment #11 from Stuart Bennett <sb476 at cam.ac.uk>  2009-01-06
13:38:06 PST ---
only armchair coding here, but that probably wants to lose the
"static" keyword
from the line

+static void backlightenable(ScrnInfoPtr pScrn, int mode)

and the following line added as a function prototype in nv_proto.h:

void backlightenable(ScrnInfoPtr pScrn, int mode);


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--- Comment #12 from Danny <moondrake at gmail.com>  2009-01-07 20:58:24
PST ---
Stuart is completely right of course. I was lazy and assumed the compiler would
pick up the method anyway, but it is necessary to make those changes otherwise
X won't start. I'll post an updated patch later.

Danny


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--- Comment #13 from Danny <moondrake at gmail.com>  2009-01-08 06:17:57
PST ---
Created an attachment (id=21805)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=21805)
backlight patch

Updated patch

d.


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--- Comment #14 from Danny <moondrake at gmail.com>  2009-02-06 04:21:45
PST ---
Markus,
didn't hear from you in a while. I wonder if it is possible  you can give
the
patch a try? 

Danny


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--- Comment #15 from Markus Tacker <m at tacker.org>  2009-02-06 04:53:11
PST ---
(In reply to comment #14)
> Markus,
> didn't hear from you in a while. I wonder if it is possible  you can
give the
> patch a try? 
> 
> Danny
> 
Yes, I'll try it this weekend.


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--- Comment #16 from Markus Tacker <m at tacker.org>  2009-02-08 02:24:29
PST ---
Hm, I managed to patch the git sources, but autogen.sh fails on Gentoo.
Any hint on how to manually build the driver on Gentoo?


checking for pkg-config... /usr/bin/pkg-config
checking pkg-config is at least version 0.9.0... yes
checking for LIBDRM_NOUVEAU... configure: error: Package requirements
(libdrm_nouveau) were not met:

No package 'libdrm_nouveau' found

Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

Alternatively, you may set the environment variables LIBDRM_NOUVEAU_CFLAGS
and LIBDRM_NOUVEAU_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.


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--- Comment #17 from Ingmar Vanhassel <ingmar at exherbo.org>  2009-02-08
03:16:22 PST ---
(In reply to comment #16)
> Hm, I managed to patch the git sources, but autogen.sh fails on Gentoo.
> Any hint on how to manually build the driver on Gentoo?
> 
> 
> checking for pkg-config... /usr/bin/pkg-config
> checking pkg-config is at least version 0.9.0... yes
> checking for LIBDRM_NOUVEAU... configure: error: Package requirements
> (libdrm_nouveau) were not met:
Your drm package is out of date, rebuild it with something newer than this
commit:
http://cgit.freedesktop.org/mesa/drm/commit/?id=225e7e274f49d5e01fa1ad3fbbb9f1499865fe67


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--- Comment #18 from Danny <moondrake at gmail.com>  2009-02-08 05:03:24
PST ---
yes, last comment is correct. If we have little time: There is no need to
update nouveau to test this, some big changes were introduced a few days ago.

danny


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--- Comment #19 from Vlado Plaga <rechner at vlado-do.de> 2010-08-19
23:51:50 PDT ---
I just opened bug #29685 with the same problem on a different iMac.

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Francisco Jerez <currojerez at riseup.net> changed:

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

--- Comment #20 from Francisco Jerez <currojerez at riseup.net> 2010-08-21
14:53:18 PDT ---
Closing this bug because the fix for bug #29685 probably fixed this one too and
there's been no response from the reporter in more than a year.

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