linux-kernel - Re: [BISECTED] commit 619efb1059 makes the MacBookPro2,2 screen flicker like its broken or half plugged in

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Message-ID: <AANLkTimXbbCJHs7WEfkbbQLpKqMM1G_qZ-cN1hcQ+3KJ@mail.gmail.com>
Date:	Tue, 8 Feb 2011 16:20:35 -0500
From:	Alex Deucher <alexdeucher@...il.com>
To:	"Justin P. Mattock" <justinmattock@...il.com>
Cc:	dri-devel@...ts.freedesktop.org,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	airlied@...hat.com
Subject: Re: [BISECTED] commit 619efb1059 makes the MacBookPro2,2 screen
 flicker like its broken or half plugged in

On Tue, Feb 8, 2011 at 3:52 PM, Justin P. Mattock
<justinmattock@...il.com> wrote:
> With the current HEAD Im getting screen flickering really bad to point where
> it looks like the screen is damaged and/or half plugged-in etc..
>
> the bisect pointed to here:
>
> commit 619efb105924d8cafa0c1dd9389e9ab506f5425d
>
> doing a git revert 619efb10592
> gets the screen working properly again.
> I havent looked much through the code to see if I can fix this. for the time
> being I'll revert this on my machine with the current, until later on.

The attached patch should fix it assuming I got your pci ids correct.
I'm done with the pll stuff; too may fixes break other boards.  Just
add a quirk table and be done with it.

Alex

>
> lspci -vv shows my card info(let me know if you need anymore)
>
> 01:00.0 VGA compatible controller: ATI Technologies Inc M56P [Radeon
> Mobility X1600] (prog-if 00 [VGA controller])
>        Subsystem: Apple Computer Inc. MacBook Pro
>        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: 256 bytes
>        Interrupt: pin A routed to IRQ 42
>        Region 0: Memory at 40000000 (32-bit, prefetchable) [size=128M]
>        Region 1: I/O ports at 3000 [size=256]
>        Region 2: Memory at 50300000 (32-bit, non-prefetchable) [size=64K]
>        Expansion ROM at 50320000 [disabled] [size=128K]
>        Capabilities: <access denied>
>        Kernel driver in use: radeon
>        Kernel modules: radeon
>
>
> Justin P. Mattock
>

View attachment "0001-drm-radeon-kms-fix-pll-algo-quirk-function.patch" of type "text/x-patch" (2830 bytes)