[Bug 36221] New: KMS with X1950 XT i2c error --> no ddc

[Bug 36221] New: KMS with X1950 XT i2c error --> no ddc

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https://bugs.freedesktop.org/show_bug.cgi?id=36221

           Summary: KMS with X1950 XT i2c error --> no ddc
           Product: DRI
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: critical
          Priority: medium
         Component: DRM/Radeon
        AssignedTo: dri-devel@lists.freedesktop.org
        ReportedBy: revealed@freakmail.de


Hello!

This is the operating system and kernel:

cat /etc/SuSE-release
openSUSE 11.4 (i586)
VERSION = 11.4
CODENAME = Celadon

uname -rio
2.6.37.1-1.2-desktop i386 GNU/Linux


When trying to boot with Kernelmodesetting there is no DDC due to an i2c error
resulting in a blank screen.

I was told in irc channel #radeon to open a bugreport and attache vbios.rom and
dmesg of a boot with KMS enabled;

I hope you can help me out!

Many thanks for all your Help!

Greetings,

R

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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--- Comment #1 from revealed <revealed@freakmail.de> 2011-04-13 13:41:58 PDT ---
Created an attachment (id=45589)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=45589)
vbios.rom

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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--- Comment #2 from revealed <revealed@freakmail.de> 2011-04-13 13:43:06 PDT ---
Created an attachment (id=45590)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=45590)
Full dmesg containing the i2c error

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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--- Comment #3 from revealed <revealed@freakmail.de> 2011-04-14 09:23:32 PDT ---
Created an attachment (id=45615)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=45615)
lspci -vnn

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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--- Comment #4 from Alex Deucher <agd5f@yahoo.com> 2011-04-14 09:44:35 PDT ---
Does booting with:
i2c-algo-bit.bit_test=0
on the kernel command line in grub fix the issue?

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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--- Comment #5 from revealed <revealed@freakmail.de> 2011-04-14 09:58:55 PDT ---
Yes :D

Computer boots up fine with this switch! Love that! :D

Is that fixable?

Many thanks!

Greetings,

R

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--- Comment #6 from Alex Deucher <agd5f@yahoo.com> 2011-04-14 10:30:21 PDT ---
(In reply to comment #5)
> Yes :D
> 
> Computer boots up fine with this switch! Love that! :D
> 
> Is that fixable?

The default value for i2c-algo-bit.bit_test is 0.  For some reason Suse sets it
to 1.  You can manually adjust it by editing the i2c_algo_bit entry in the
files in /etc/modprobe.d/

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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--- Comment #7 from revealed <revealed@freakmail.de> 2011-04-14 10:48:28 PDT ---
Ha!

So the problem seems to have existed due to my TV-Card:

cd /etc/modprobe.d/
disk@wild-thing:/etc/modprobe.d> grep i2c *
50-blacklist.conf:blacklist i2c-matroxfb
50-tv.conf:options i2c-algo-bit bit_test=1

Man!! :D I thank you so much! I dont know why this is enabled in 50-tv.conf;
I have a Hauppauge PVR 150. I dont know if this has to be enabled for it. But
it is... 

Greetings,

R

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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--- Comment #8 from revealed <revealed@freakmail.de> 2011-04-14 10:58:39 PDT ---
Sorry for doubleposting:

I added the option to menu.lst; As workaround. Thank you for the hint!

Also i tried commenting out the option in 50-tv.conf; And i removed the newly
added bootparameter for a test. 

The issue came back in this constellation. So the value seems to be set as
default.

Possible requirement for my TV-Card?

I can live with adding this as bootparameter to menu.lst

Many Thanks!

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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revealed <revealed@freakmail.de> changed:

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

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|WORKSFORME                  |FIXED

--- Comment #9 from Alex Deucher <agd5f@yahoo.com> 2011-04-14 11:05:36 PDT ---
(In reply to comment #8)
> Sorry for doubleposting:
> 
> I added the option to menu.lst; As workaround. Thank you for the hint!
> 
> Also i tried commenting out the option in 50-tv.conf; And i removed the newly
> added bootparameter for a test. 
> 
> The issue came back in this constellation. So the value seems to be set as
> default.

odd.  maybe your distro changed the default in their kernel source.

> 
> Possible requirement for my TV-Card?

No.  It's a debugging option for i2c.  You could potentially run into the same
issue with another driver that uses i2c bit algo.

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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--- Comment #10 from Alex Deucher <agd5f@yahoo.com> 2011-04-14 11:06:31 PDT ---
Created an attachment (id=45619)
 View: https://bugs.freedesktop.org/attachment.cgi?id=45619
 Review: https://bugs.freedesktop.org/review?bug=36221&attachment=45619

possible fix

This patch should fix the issue.

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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Alex Deucher <agd5f@yahoo.com> changed:

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

--- Comment #11 from Alex Deucher <agd5f@yahoo.com> 2011-04-14 11:10:36 PDT ---
Leave this open until we get some feedback from Suse or the i2c people.

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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--- Comment #12 from revealed <revealed@freakmail.de> 2011-04-14 11:14:14 PDT ---
Oh yes :)

Sorry! I have to also omit that i have an open bugreport at novell bugzilla
since februar. I was getting few response. Thats the reason i opened this
bugreport here.

I set that one in novel bugzilla to resolved.

https://bugzilla.novell.com/show_bug.cgi?id=669937 

I know this is a very unkind multiposting from me. I want to apologize for
this.
I guess the report in novell bugzilla is unnecessary now?

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--- Comment #13 from Alex Deucher <agd5f@yahoo.com> 2011-04-14 12:37:33 PDT ---
(In reply to comment #12)
> Oh yes :)
> 
> Sorry! I have to also omit that i have an open bugreport at novell bugzilla
> since februar. I was getting few response. Thats the reason i opened this
> bugreport here.
> 
> I set that one in novel bugzilla to resolved.
> 
> https://bugzilla.novell.com/show_bug.cgi?id=669937 
> 
> I know this is a very unkind multiposting from me. I want to apologize for
> this.

No worries :)

> I guess the report in novell bugzilla is unnecessary now?

Leave it open for now.  They might have some ideas why i2c-algo-bit.bit_test=1
is set by default.

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--- Comment #14 from revealed <revealed@freakmail.de> 2011-04-14 13:13:47 PDT ---
Ok. I am so happy at the moment having working desktop effects and such :D

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Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #45619|0                           |1
        is obsolete|                            |

--- Comment #15 from Alex Deucher <agd5f@yahoo.com> 2011-04-14 14:03:58 PDT ---
Created an attachment (id=45633)
 View: https://bugs.freedesktop.org/attachment.cgi?id=45633
 Review: https://bugs.freedesktop.org/review?bug=36221&attachment=45633

better fix

Is there any way you could test this patch?

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--- Comment #16 from revealed <revealed@freakmail.de> 2011-04-14 14:22:20 PDT ---
I would!

Do i have to edit the file in:
/usr/src/linux-2.6.37.1-1.2/drivers/i2c/algos/i2c-algo-bit.c

And make the i2c-algo-bit somehow? I cant remember properly if i can recompile
a single module? I dont need to translate the whole kernel?

Can give me a hint?

Greetings,

R

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--- Comment #17 from Alex Deucher <agd5f@yahoo.com> 2011-04-14 14:28:40 PDT ---
(In reply to comment #16)
> I would!
> 
> Do i have to edit the file in:
> /usr/src/linux-2.6.37.1-1.2/drivers/i2c/algos/i2c-algo-bit.c

yes, just download the patch into /usr/src/linux-2.6.37.1-1.2/ and run:
patch -p1 -i 0001-i2c-algo-bit-make-sure-to-call-pre-post_xfer-for-bit.patch

> 
> And make the i2c-algo-bit somehow? I cant remember properly if i can recompile
> a single module? I dont need to translate the whole kernel?
> 

from /usr/src/linux-2.6.37.1-1.2/ run:
make
make modules
make modules_install
make install
and select the new kernel in grub.

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--- Comment #18 from revealed <revealed@freakmail.de> 2011-04-14 14:34:47 PDT ---
Ok i will do but i have one question:

The last line to add from the diff looks different in my version:

My Version says:

     if (bit_test) {
                int ret = test_bus(bit_adap, adap->name);
                if (ret < 0)
                        return -ENODEV;
        }


Do i have to remove the 'int' too?

Many thanks!

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--- Comment #19 from Alex Deucher <agd5f@yahoo.com> 2011-04-14 14:39:07 PDT ---
(In reply to comment #18)
> Ok i will do but i have one question:
> 
> The last line to add from the diff looks different in my version:
> 
> My Version says:
> 
>      if (bit_test) {
>                 int ret = test_bus(bit_adap, adap->name);
>                 if (ret < 0)
>                         return -ENODEV;
>         }
> 
> 
> Do i have to remove the 'int' too?
>

in your case keep it.  Change it to:
int ret = test_bus(adap, adap->name);

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--- Comment #20 from revealed <revealed@freakmail.de> 2011-04-14 14:41:15 PDT ---
done! 

Will proceed with steps from comment 17.

Greetings,

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--- Comment #21 from revealed <revealed@freakmail.de> 2011-04-14 14:44:09 PDT ---
I did:
make oldconfig

now i am running make?

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--- Comment #22 from revealed <revealed@freakmail.de> 2011-04-14 15:05:08 PDT ---
drivers/i2c/algos/i2c-algo-bit.c: In Funktion »test_bus«:
drivers/i2c/algos/i2c-algo-bit.c:237:28: Fehler: »adap« als andere Symbolart
redeklariert
drivers/i2c/algos/i2c-algo-bit.c:235:47: Anmerkung: Vorherige Definition von
»adap« war hier
drivers/i2c/algos/i2c-algo-bit.c:237:35: Fehler: »i2c_adap« undeclared (first
use in this function)
drivers/i2c/algos/i2c-algo-bit.c:237:35: Anmerkung: each undeclared identifier
is reported only once for each function it appears in
drivers/i2c/algos/i2c-algo-bit.c: In Funktion »i2c_bit_prepare_bus«:
drivers/i2c/algos/i2c-algo-bit.c:623:3: Warnung: Übergabe des Arguments 1 von
»test_bus« von inkompatiblem Zeigertyp
drivers/i2c/algos/i2c-algo-bit.c:235:12: Anmerkung: expected »struct
i2c_algo_bit_data *« but argument is of type »struct i2c_adapter *«
drivers/i2c/algos/i2c-algo-bit.c:620:28: Warnung: Variable »bit_adap« wird
nicht verwendet
make[3]: *** [drivers/i2c/algos/i2c-algo-bit.o] Error 1
make[2]: *** [drivers/i2c/algos] Error 2
make[1]: *** [drivers/i2c] Error 2
make: *** [drivers] Fehler 2

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--- Comment #23 from revealed <revealed@freakmail.de> 2011-04-14 15:16:35 PDT ---
patch -p1 -i 0001-i2c-algo-bit-make-sure-to-call-pre-post_xfer-for-bit.patch
patching file drivers/i2c/algos/i2c-algo-bit.c
Hunk #1 FAILED at 232.
Hunk #2 FAILED at 297.
Hunk #3 FAILED at 607.
3 out of 3 hunks FAILED -- saving rejects to file
drivers/i2c/algos/i2c-algo-bit.c.rej

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--- Comment #24 from revealed <revealed@freakmail.de> 2011-04-14 15:20:03 PDT ---
Starting new with the downloaded patch and the original file from SUSE rpm i
get the following output in the rej. file when issuing the:
Patch command: (forget my last both postings, please).

--- drivers/i2c/algos/i2c-algo-bit.c
+++ drivers/i2c/algos/i2c-algo-bit.c
@@ -622,7 +637,7 @@
        int ret;

        if (bit_test) {
-               ret = test_bus(bit_adap, adap->name);
+               ret = test_bus(adap, adap->name);
                if (ret < 0)
                        return -ENODEV;
        }
drivers/i2c/algos/i2c-algo-bit.c.rej lines 1-11/11 (END) 

I guess there is something wrong with the patch?

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--- Comment #25 from revealed <revealed@freakmail.de> 2011-04-14 15:21:32 PDT ---
But if i run make with this file, i get:

 CC [M]  drivers/i2c/algos/i2c-algo-bit.o
drivers/i2c/algos/i2c-algo-bit.c: In Funktion »i2c_bit_prepare_bus«:
drivers/i2c/algos/i2c-algo-bit.c:623:3: Warnung: Übergabe des Arguments 1 von
»test_bus« von inkompatiblem Zeigertyp
drivers/i2c/algos/i2c-algo-bit.c:235:12: Anmerkung: expected »struct
i2c_adapter *« but argument is of type »struct i2c_algo_bit_data *«
  CC [M]  drivers/i2c/algos/i2c-algo-pca.o
  LD      drivers/i2c/busses/built-in.o

And it continues.

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--- Comment #26 from revealed <revealed@freakmail.de> 2011-04-14 15:27:06 PDT ---
Created an attachment (id=45636)
 --> (https://bugs.freedesktop.org/attachment.cgi?id=45636)
i2c-algo-bit.c from SuSE rpm; ??

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--- Comment #27 from Alex Deucher <agd5f@yahoo.com> 2011-04-14 15:31:11 PDT ---
Created an attachment (id=45637)
 View: https://bugs.freedesktop.org/attachment.cgi?id=45637
 Review: https://bugs.freedesktop.org/review?bug=36221&attachment=45637

2.6.37 patch

looks like the file changed slightly in newer kernels.  Try this patch.

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Alex Deucher <agd5f@yahoo.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #45636|text/x-csrc                 |text/plain
          mime type|                            |
  Attachment #45636|0                           |1
           is patch|                            |

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--- Comment #28 from revealed <revealed@freakmail.de> 2011-04-14 15:37:54 PDT ---
With this patch i get:

drivers/i2c/algos/i2c-algo-bit.c: In Funktion »i2c_bit_prepare_bus«:
drivers/i2c/algos/i2c-algo-bit.c:620:28: Warnung: Variable »bit_adap« wird
nicht verwendet

--- Make continues???

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--- Comment #29 from revealed <revealed@freakmail.de> 2011-04-14 15:39:05 PDT ---
I am always patching a fresh copy of i2c-algo-bit.c from SuSE rpm; ?? Is this
correct?

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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--- Comment #30 from Alex Deucher <agd5f@yahoo.com> 2011-04-14 16:05:09 PDT ---
(In reply to comment #28)
> With this patch i get:
> 
> drivers/i2c/algos/i2c-algo-bit.c: In Funktion »i2c_bit_prepare_bus«:
> drivers/i2c/algos/i2c-algo-bit.c:620:28: Warnung: Variable »bit_adap« wird
> nicht verwendet
> 
> --- Make continues???

you can ignore it or remove this line in i2c_bit_prepare_bus():
struct i2c_algo_bit_data *bit_adap = adap->algo_data;

It's just saying the variable is unused.

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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https://bugs.freedesktop.org/show_bug.cgi?id=36221

--- Comment #31 from revealed <revealed@freakmail.de> 2011-04-14 16:06:56 PDT ---
So if i ignore this now, i can continue with:

make modules
make modules_install
make install
and select the new kernel in grub.

And it should work?

greetings,

R

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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--- Comment #32 from Alex Deucher <agd5f@yahoo.com> 2011-04-14 16:09:29 PDT ---
(In reply to comment #31)
> So if i ignore this now, i can continue with:
> 
> make modules
> make modules_install
> make install
> and select the new kernel in grub.
> 
> And it should work?

yes.  make sure you remove i2c-algo-bit.bit_test=0 from your grub config when
testing it.

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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--- Comment #33 from revealed <revealed@freakmail.de> 2011-04-14 16:11:04 PDT ---
Yes i will... make is still processing at net/xy ... i guess this will take
some time.

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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--- Comment #34 from revealed <revealed@freakmail.de> 2011-04-14 16:33:22 PDT ---
Will reboot and test now!

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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--- Comment #35 from revealed <revealed@freakmail.de> 2011-04-14 16:38:08 PDT ---
Seems to work fine!

disk@wild-thing:~> grep command /var/log/boot.msg
<5>[    0.000000] Kernel command line: root=/dev/sdc6 resume=/dev/sdc5
splash=silent
disk@wild-thing:~> dmesg | grep i2c
[    8.316773] ivtv0: Reopen i2c bus for IR-blaster support
[    8.522473] cx25840 5-0044: cx25843-23 found @ 0x88 (ivtv i2c driver #0)
[    8.656997] tuner 5-0061: chip found @ 0xc2 (ivtv i2c driver #0)
[    8.889160] wm8775 5-001b: chip found @ 0x36 (ivtv i2c driver #0)
[   29.856130] input: i2c IR (Hauppauge WinTV PVR-150 as
/devices/virtual/rc/rc0/input6
[   29.856207] rc0: i2c IR (Hauppauge WinTV PVR-150 as /devices/virtual/rc/rc0
[   29.856210] ir-kbd-i2c: i2c IR (Hauppauge WinTV PVR-150 detected at
i2c-5/5-0071/ir0 [ivtv i2c driver #0]
disk@wild-thing:~> dmesg | grep drm
[    2.461044] [drm] Initialized drm 1.1.0 20060810
[    2.513747] [drm] radeon defaulting to kernel modesetting.
[    2.513801] [drm] radeon kernel modesetting enabled.
[    2.515575] [drm] initializing kernel modesetting (R580 0x1002:0x7240).
[    2.515685] [drm] register mmio base: 0xFF7F0000
[    2.515733] [drm] register mmio size: 65536
[    2.517031] [drm] Generation 2 PCI interface, using max accessible memory
[    2.517335] [drm] radeon: irq initialized.
[    2.517455] [drm] Detected VRAM RAM=512M, BAR=256M
[    2.517502] [drm] RAM width 256bits DDR
[    2.517739] [drm] radeon: 512M of VRAM memory ready
[    2.517786] [drm] radeon: 512M of GTT memory ready.
[    2.517845] [drm] GART: num cpu pages 131072, num gpu pages 131072
[    2.519502] [drm] radeon: 4 quad pipes, 1 z pipes initialized.
[    2.520495] [drm] PCIE GART of 512M enabled (table at 0x00040000).
[    2.520643] [drm] Loading R500 Microcode
[    2.522154] [drm] radeon: ring at 0x0000000020001000
[    2.522225] [drm] ring test succeeded in 3 usecs
[    2.522411] [drm] radeon: ib pool ready.
[    2.522519] [drm] ib test succeeded in 0 usecs
[    2.523408] [drm] Radeon Display Connectors
[    2.523456] [drm] Connector 0:
[    2.523502] [drm]   DVI-I
[    2.523568] [drm]   HPD2
[    2.523621] [drm]   DDC: 0x7e40 0x7e40 0x7e44 0x7e44 0x7e48 0x7e48 0x7e4c
0x7e4c
[    2.523709] [drm]   Encoders:
[    2.523762] [drm]     CRT1: INTERNAL_KLDSCP_DAC1
[    2.523809] [drm]     DFP3: INTERNAL_LVTM1
[    2.523874] [drm] Connector 1:
[    2.523926] [drm]   S-video
[    2.523972] [drm]   Encoders:
[    2.524050] [drm]     TV1: INTERNAL_KLDSCP_DAC2
[    2.524104] [drm] Connector 2:
[    2.524150] [drm]   DVI-I
[    2.524214] [drm]   HPD1
[    2.524267] [drm]   DDC: 0x7e50 0x7e50 0x7e54 0x7e54 0x7e58 0x7e58 0x7e5c
0x7e5c
[    2.524354] [drm]   Encoders:
[    2.524407] [drm]     CRT2: INTERNAL_KLDSCP_DAC2
[    2.524454] [drm]     DFP1: INTERNAL_KLDSCP_TMDS1
[    2.636077] [drm] Possible lm64 thermal controller at 0x18
[    2.636172] [drm] radeon: power management initialized
[    2.762666] [drm] fb mappable at 0xC00C0000
[    2.762722] [drm] vram apper at 0xC0000000
[    2.762775] [drm] size 9216000
[    2.762827] [drm] fb depth is 24
[    2.762879] [drm]    pitch is 7680
[    2.775905] fb0: radeondrmfb frame buffer device
[    2.775926] drm: registered panic notifier
[    2.775949] [drm] Initialized radeon 2.7.0 20080528 for 0000:01:00.0 on
minor 0

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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--- Comment #36 from Alex Deucher <agd5f@yahoo.com> 2011-04-14 16:44:28 PDT ---
(In reply to comment #35)
> Seems to work fine!

Great!  thanks for testing.

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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--- Comment #37 from revealed <revealed@freakmail.de> 2011-04-14 16:48:54 PDT ---
Whats next for me?

Can i run make clean all on /usr/src/linux-2x? And wait for an Update`?

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--- Comment #38 from Alex Deucher <agd5f@yahoo.com> 2011-04-14 16:52:11 PDT ---
(In reply to comment #37)
> Whats next for me?
> 
> Can i run make clean all on /usr/src/linux-2x? And wait for an Update`?

I've sent the patch to the linux i2c list to be hopefully applied upstream. 
It's up to the distros to pick up the patch in the meantime.

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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--- Comment #39 from Alex Deucher <agd5f@yahoo.com> 2011-04-14 16:53:01 PDT ---
(In reply to comment #38)
> (In reply to comment #37)
> > Whats next for me?
> > 
> > Can i run make clean all on /usr/src/linux-2x? And wait for an Update`?
> 
> I've sent the patch to the linux i2c list to be hopefully applied upstream. 
> It's up to the distros to pick up the patch in the meantime.

Or they can set i2c-algo-bit.bit_test=0 in the interim.

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--- Comment #40 from revealed <revealed@freakmail.de> 2011-04-14 16:58:21 PDT ---
wow ok. 

Then i will keep the patch and cleanup the source.

Many thanks for all your help. I will go to bed now. It is close to two o clock
in the morning in my place.

Thank you very much once more :D

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--- Comment #41 from revealed <revealed@freakmail.de> 2011-04-30 03:45:31 PDT ---
Hello!

No problem anymore with 2.6.37.6-0.5-desktop i386 GNU/Linux

Many thanks for your Help! 

Greetings,

R

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[Bug 36221] KMS with X1950 XT i2c error --> no ddc

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Alex Deucher <agd5f@yahoo.com> changed:

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

--- Comment #42 from Alex Deucher <agd5f@yahoo.com> 2011-04-30 08:17:24 PDT ---
The fix is upstream now.  Please reopen if it's still an issue.

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