[Bug 22956] New: nv50: kms, random screen blinkage

[Bug 22956] New: nv50: kms, random screen blinkage

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

http://bugs.freedesktop.org/show_bug.cgi?id=22956

           Summary: nv50: kms, random screen blinkage
           Product: xorg
           Version: git
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: Driver/nouveau
        AssignedTo: nouveau-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org
        ReportedBy: kamilkss-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
         QAContact: xorg-team-go0+a7rfsptAfugRpC6u6w@public.gmane.org


Created an attachment (id=28020)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=28020)
dmesg

when kms is off everything is fine, but with kms on screen seems to blink
randomly from time time whether I'm in shell~tty1 or when X is running. it
almost seems like a crtc timing issue. along with the screen blink there's one
horizontal bar/artifact at the same level as the cursor, both true for
shell~tty1 and xorg~gui. also upon entering xorg~gui I noticed fuzzy fonts as
if vert refresh rate was off but it was at 60Hz which happens to the max of my
lcd.


-- 
Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

[Bug 22956] nv50: kms, random screen blinkage

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

http://bugs.freedesktop.org/show_bug.cgi?id=22956





--- Comment #1 from Kamil Kaminski <kamilkss-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>  2009-07-26 20:34:42 PST ---
Created an attachment (id=28021)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=28021)
gt200 vbios


-- 
Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

[Bug 22956] nv50: kms, random screen blinkage

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

http://bugs.freedesktop.org/show_bug.cgi?id=22956





--- Comment #2 from Kamil Kaminski <kamilkss-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>  2009-07-26 20:37:09 PST ---
Created an attachment (id=28022)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=28022)
Xorg.0 no go with exapixmaps, since when it is not working? :p


-- 
Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

[Bug 22956] nv50: kms, random screen blinkage

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

http://bugs.freedesktop.org/show_bug.cgi?id=22956





--- Comment #3 from Kamil Kaminski <kamilkss-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>  2009-07-26 20:39:43 PST ---
Created an attachment (id=28023)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=28023)
kernel log with xorg and ddx up, beware~7.4MB


-- 
Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

[Bug 22956] nv50: kms, random screen blinkage

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

http://bugs.freedesktop.org/show_bug.cgi?id=22956


Kamil Kaminski <kamilkss-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
  Attachment #28020|application/octet-stream    |text/plain
          mime type|                            |




-- 
Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

[Bug 22956] nv50: kms, random screen blinkage

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

http://bugs.freedesktop.org/show_bug.cgi?id=22956





--- Comment #4 from Maarten Maathuis <madman2003-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>  2009-07-27 13:21:24 PST ---
Something strange happened which is preventing tiled frontbuffers working on
NVA0 gpus, darktama is aware of it, but no solution has been found by him.

The reason for the fuzzy image i do not know.


-- 
Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

[Bug 22956] nv50: kms, random screen blinkage

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

http://bugs.freedesktop.org/show_bug.cgi?id=22956





--- Comment #5 from Kamil Kaminski <kamilkss-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>  2009-07-28 23:47:32 PST ---
I narrowed down the 'blinkage' issue to commit "drm/nouveau: allow entire
0x0002xxxx range in VBIOS parser on >=nv50",
http://cgit.freedesktop.org/nouveau/linux-2.6/commit/?id=66125505c3ac0e201e8286c777be46f3b415ff53,
this is what makes my NVA0 go crazy. I'm really happy that it all went well, my
first time git bisecting anything...For each nouveau.ko that I build I had to
hexedit the vermagic section/symbol to be able to insert the module into the
current running kernel since vergmagic was always different after every compile
(and I had to end with same filesize otherwise it wouldn't load!?). Is there a
better way to do it? From what I read there's other way to do, e.g. strip
.modinfo symbol but this never worked for me (objcopy -N .modinfo mod.ko
mod-stripped.ko)

stillunknown, AFAIK the fuzzy screen was a result of blinkage. Also the
exapixmaps/tiles work for me now. There was at least 1 other person on the IRC
that described similar blinking issue, I will try to make a video of what I was
experiencing ;).


-- 
Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

[Bug 22956] nv50: kms, random screen blinkage

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

http://bugs.freedesktop.org/show_bug.cgi?id=22956





--- Comment #6 from Kamil Kaminski <kamilkss-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>  2009-07-29 00:58:30 PST ---
Here's what was happening, next time I will need to use Windows(TM) to record
and be able to set my webcam to 30fps instead of 5fps :(.

http://www.youtube.com/watch?v=TlqSOv8UyQg


-- 
Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

[Bug 22956] nv50: kms, random screen blinkage

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

http://bugs.freedesktop.org/show_bug.cgi?id=22956





--- Comment #7 from Ben Skeggs <skeggsb-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>  2009-07-29 02:50:57 PST ---
Are you 100% certain that's the commit?  Unless you're resuming from suspend,
that code should have no effect, unless simply reading from one of the regs in
your VBIOS scripts causes it..


I'd be curious for logs of "modprobe drm debug=1; modprobe nouveau modeset=1"
both with and without that commit.

Thanks!


-- 
Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

[Bug 22956] nv50: kms, random screen blinkage

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

http://bugs.freedesktop.org/show_bug.cgi?id=22956





--- Comment #8 from Kamil Kaminski <kamilkss-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>  2009-07-29 04:27:27 PST ---
Created an attachment (id=28153)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=28153)
good,
http://cgit.freedesktop.org/nouveau/linux-2.6/commit/?id=7992783bc72309bf4e1323097078406c4588adec


-- 
Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

[Bug 22956] nv50: kms, random screen blinkage

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

http://bugs.freedesktop.org/show_bug.cgi?id=22956





--- Comment #9 from Kamil Kaminski <kamilkss-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>  2009-07-29 04:28:04 PST ---
Created an attachment (id=28154)
 --> (http://bugs.freedesktop.org/attachment.cgi?id=28154)
bad,
http://cgit.freedesktop.org/nouveau/linux-2.6/commit/?id=66125505c3ac0e201e8286c777be46f3b415ff53


-- 
Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

[Bug 22956] nv50: kms, random screen blinkage

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

http://bugs.freedesktop.org/show_bug.cgi?id=22956





--- Comment #10 from Kamil Kaminski <kamilkss-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>  2009-07-29 04:30:31 PST ---
"drm/nouveau: implement init table opcode 0x97"
http://cgit.freedesktop.org/nouveau/linux-2.6/commit/?id=7992783bc72309bf4e1323097078406c4588adec
is the newest commit that works

starting from "drm/nouveau: allow entire 0x0002xxxx range in VBIOS parser on
>=nv50" I get blinking screen, I confirmed it with "drm/nv50: fix bogus warning
when running analog output scripts" which happens to be a one liner.

For each module I did a cold-boot.


-- 
Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

[Bug 22956] nv50: kms, random screen blinkage

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

http://bugs.freedesktop.org/show_bug.cgi?id=22956





--- Comment #11 from Kamil Kaminski <kamilkss-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>  2009-07-30 14:12:58 PST ---
I noticed something interesting with 0x00020074 register, if you look at the
logs, when this register is omitted/tagged as unknown everything works fine.
Currently with git code this is what's happening:

nouveau 0000:01:00.0:   Write: Reg: 0x00020074, Data: 0x80000000

while the mmiotrace from 190.18 blob shows this:

R 4 222.638450 3 0xfa020074 0x90000000 0x0 0
W 4 222.638466 3 0xfa020074 0x90010000 0x0 0
...
R 4 222.638579 3 0xfa020074 0x90010000 0x0 0
W 4 222.638594 3 0xfa020074 0x90010000 0x0 0

notice that blob writes 0x90010000 to that registers, do we know what this
register does?





-- 
Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.

[Bug 22956] nv50: kms, random screen blinkage

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ]

http://bugs.freedesktop.org/show_bug.cgi?id=22956


Kamil Kaminski <kamilkss-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> changed:

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




--- Comment #12 from Kamil Kaminski <kamilkss-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>  2009-07-30 18:21:17 PST ---
fixed! thanks darktama
http://cgit.freedesktop.org/nouveau/linux-2.6/commit/?id=9709e636a5ca3d3116da3ab279d5420e2700cad8


-- 
Configure bugmail: http://bugs.freedesktop.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.