Subject: Re: Revert 737a3bb9416ce2a7c7a4170852473a4fcc9c67e8 ?

From: Michel Dänzer <[email-masked]>
Date: Tue, 12 Apr 2011 13:46:10 +0200

On Die, 2011-04-12 at 13:30 +0200, Gabriel Paubert wrote: 
> 
> On Mon, Apr 11, 2011 at 05:32:43PM +0200, Michel Dänzer wrote:
> > 
> > Have you ruled out any MSI related problems? I think the IRQ not working
> > could explain the symptoms...
> 
> Booting with MSI disabled does not change anything. Actually on this
> machine the Ethernet (tigon3) uses MSI and everything is fine. OTOH,
> on my home PC (dual code Athlon64 4 1/2 years old), MSI has never worked.

Okay, the fact no_wb helps probably rules out an IRQ problem anyway.

> > Make sure this line changes to 'WB disabled' with no_wb=1. There's a
> > writeback endianness bug with modeset=1, see
> > http://lists.freedesktop.org/archives/dri-devel/2011-April/009960.html .
> > 
> 
> With no_wb=1 the driver goes a bit further but the X server ends
> up in an infinite ioctl loop and the logs are: 

Which ioctl does it loop on? Please provide the Xorg.0.log file as well.

> kernel: [drm] radeon kernel modesetting enabled.
> kernel: checking generic (c0000000 140000) vs hw (c0000000 10000000)
> kernel: fb: conflicting fb hw usage radeondrmfb vs OFfb vga,Displa - removing generic driver
> kernel: [drm] initializing kernel modesetting (RV530 0x1002:0x71C7).
> kernel: radeon 0000:f1:00.0: Using 64-bit DMA iommu bypass
> kernel: [drm] register mmio base: 0xE8000000
> kernel: [drm] register mmio size: 65536
> kernel: radeon 0000:f1:00.0: Invalid ROM contents
> kernel: ATOM BIOS: X1650PRO
> kernel: [drm] Generation 2 PCI interface, using max accessible memory
> kernel: radeon 0000:f1:00.0: VRAM: 512M 0x0000000000000000 - 0x000000001FFFFFFF (512M used)
> kernel: radeon 0000:f1:00.0: GTT: 512M 0x0000000020000000 - 0x000000003FFFFFFF
> kernel: [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
> kernel: [drm] Driver supports precise vblank timestamp query.
> kernel: [drm] radeon: irq initialized.
> kernel: [drm] Detected VRAM RAM=512M, BAR=256M
> kernel: [drm] RAM width 128bits DDR
> kernel: [TTM] Zone  kernel: Available graphics memory: 1003018 kiB.
> kernel: [TTM] Initializing pool allocator.
> kernel: [drm] radeon: 512M of VRAM memory ready
> kernel: [drm] radeon: 512M of GTT memory ready.
> kernel: [drm] GART: num cpu pages 131072, num gpu pages 131072
> kernel: [drm] radeon: 1 quad pipes, 2 z pipes initialized.
> kernel: [drm] PCIE GART of 512M enabled (table at 0x00040000).
> kernel: radeon 0000:f1:00.0: WB disabled
> kernel: [drm] Loading R500 Microcode
> kernel: [drm] radeon: ring at 0x0000000020001000
> kernel: [drm] ring test succeeded in 6 usecs
> kernel: [drm] radeon: ib pool ready.
> kernel: [drm] ib test succeeded in 0 usecs
> kernel: [drm] Radeon Display Connectors
> kernel: [drm] Connector 0:
> kernel: [drm]   DVI-I
> kernel: [drm]   HPD1
> kernel: [drm]   DDC: 0x7e40 0x7e40 0x7e44 0x7e44 0x7e48 0x7e48 0x7e4c 0x7e4c
> kernel: [drm]   Encoders:
> kernel: [drm]     CRT1: INTERNAL_KLDSCP_DAC1
> kernel: [drm]     DFP1: INTERNAL_KLDSCP_TMDS1
> kernel: [drm] Connector 1:
> kernel: [drm]   S-video
> kernel: [drm]   Encoders:
> kernel: [drm]     TV1: INTERNAL_KLDSCP_DAC2
> kernel: [drm] Connector 2:
> kernel: [drm]   DVI-I
> kernel: [drm]   HPD2
> kernel: [drm]   DDC: 0x7e50 0x7e50 0x7e54 0x7e54 0x7e58 0x7e58 0x7e5c 0x7e5c
> kernel: [drm]   Encoders:
> kernel: [drm]     CRT2: INTERNAL_KLDSCP_DAC2
> kernel: [drm]     DFP3: INTERNAL_LVTM1
> kernel: [drm] Possible lm63 thermal controller at 0x4c
> kernel: [drm] fb mappable at 0xC00C0000
> kernel: [drm] vram apper at 0xC0000000
> kernel: [drm] size 9216000
> kernel: [drm] fb depth is 24
> kernel: [drm]    pitch is 7680
> kernel: checking generic (c0000000 140000) vs hw (c0000000 10000000)
> kernel: fb: conflicting fb hw usage radeondrmfb vs OFfb vga,Displa - removing generic driver
> kernel: fb1: radeondrmfb frame buffer device

Hmm, I think this should say fb0, but that should only matter for
console, not X.

> kernel: drm: registered panic notifier
> kernel: [drm] Initialized radeon 2.8.0 20080528 for 0000:f1:00.0 on minor 0
> kernel: [drm:drm_mode_getfb] *ERROR* invalid framebuffer id

BTW, if your kernel contains commit
69a07f0b117a40fcc1a479358d8e1f41793617f2, can you try if reverting that
helps?

-- 
Earthling Michel Dänzer           |                http://www.vmware.com
Libre software enthusiast         |          Debian, X and DRI developer