Bug 43272

Summary:	pink/purple line displays to the left of the screen
Product:	Drivers	Reporter:	Damien Churchill (damoxc)
Component:	Video(DRI - non Intel)	Assignee:	drivers_video-dri
Status:	CLOSED INVALID
Severity:	low	CC:	alan, alexdeucher, przanoni
Priority:	P1
Hardware:	All
OS:	Linux
Kernel Version:	3.4.0	Subsystem:
Regression:	Yes	Bisected commit-id:

Description Damien Churchill 2012-05-22 15:37:12 UTC

Ever since the upgrade to 3.3 I've had a pinkish purple vertical line down the left hand side of the screen that's probably 2-5px wide. It happens early in the boot process (I imagine as soon as KMS in engaged). I've had a look through the boot log but can't see anything suspect, but then I don't really know what I'm looking for.

Anyone who can give some help in where to look for additional information to help resolve this would be most appreciated.

Comment 1 Damien Churchill 2012-05-22 15:39:08 UTC

I should add this is a Sapphire Radeon HD6950 plugged into a Samsung HD TV via a HDMI cable.

lspci -vvv output

03:00.0 VGA compatible controller: Advanced Micro Devices [AMD] nee ATI Cayman PRO [Radeon HD 6950] (prog-if 00 [VGA controller])
        Subsystem: PC Partner Limited Device 186b
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0, Cache Line Size: 64 bytes
        Interrupt: pin A routed to IRQ 45
        Region 0: Memory at e0000000 (64-bit, prefetchable) [size=256M]
        Region 2: Memory at fb5c0000 (64-bit, non-prefetchable) [size=128K]
        Region 4: I/O ports at be00 [size=256]
        [virtual] Expansion ROM at fb500000 [disabled] [size=128K]
        Capabilities: <access denied>
        Kernel driver in use: radeon

Comment 2 Alex Deucher 2012-05-22 15:54:37 UTC

Did you enable hdmi audio?  Try making sure radeon.audio=0

Comment 3 Damien Churchill 2012-05-22 15:56:10 UTC

Looks like I do, I'll have to wait until I get back from work to see whether that fixes it, thanks!

Comment 4 Paulo Zanoni 2012-05-22 16:22:35 UTC

Just a note that might help debugging: I see a purple vertical line on the left hand side of the screen when I send AVI InfoFrames to a DVI monitor.

Also, when I do this, some modes don't work, other modes look really buggy.

Comment 5 Alex Deucher 2012-05-22 16:24:51 UTC

The purple line is caused by setting the digital encoder into HDMI mode and then not sending the proper infoframes.

Comment 6 Damien Churchill 2012-05-25 10:14:12 UTC

Hi,

Setting radeon.audio=0 has resolved the problem. I still had radeon.audio=1 set in a modprobe.d file left over from when I had a HD4870.

Thanks for the help!