linux-kernel - Asus F5RL laptop unable to resume from S3 because of radeon module

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Message-Id: <201308222018.00905.linux@rainbow-software.org>
Date:	Thu, 22 Aug 2013 20:18:00 +0200
From:	Ondrej Zary <linux@...nbow-software.org>
To:	Kernel development list <linux-kernel@...r.kernel.org>
Cc:	Alex Deucher <alexander.deucher@....com>
Subject: Asus F5RL laptop unable to resume from S3 because of radeon module

Hello,
resume from suspend-to-RAM (S3) on Asus F5RL laptop does not work.
According to many reports found by Google, it was always been that and there
is no fix or workaround.

Did some tests:

radeon module loaded (usual state):
After "echo mem>/sys/power/state", the laptop suspends correctly (power LED
blinks). When power button is pressed, power LED goes on and that's all.
No more activity, machine is frozen completely.

radeon module not loaded at all:
Laptop resumes correctly (keyboard LED work, network works), only the LCD is
blank (obviously). Loading radeon module now initializes the card properly:
LCD goes on and console works.

radeon module loaded (but fbcon module not loaded) and then unloaded:
Machine freezes the same way as when the module is loaded.

So it looks like the radeon module does some initialization that prevents
resume from working.

Hibernation works fine.

Any ideas what to test or how to debug this?

Details:
01:05.0 VGA compatible controller [0300]: Advanced Micro Devices, Inc. [AMD/ATI] RC410M [Mobility Radeon Xpress 200M] [1002:5a62] (prog-if 00 
[VGA controller])
        Subsystem: ASUSTeK Computer Inc. Device [1043:1402]
        Flags: bus master, 66MHz, medium devsel, latency 64, IRQ 10
        Memory at c0000000 (32-bit, prefetchable) [size=256M]
        I/O ports at 9800 [size=256]
        Memory at fa8f0000 (32-bit, non-prefetchable) [size=64K]
        Expansion ROM at fa8c0000 [disabled] [size=128K]
        Capabilities: [50] Power Management version 2
        Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit-
        Kernel driver in use: radeon

[    4.836009] [drm] radeon kernel modesetting enabled.
[    4.837169] [drm] initializing kernel modesetting (RS400 0x1002:0x5A62 0x1043:0x1402).
[    4.837251] [drm] register mmio base: 0xFA8F0000
[    4.837302] [drm] register mmio size: 65536
[    4.837570] [drm] Generation 2 PCI interface, using max accessible memory
[    4.837653] radeon 0000:01:05.0: VRAM: 128M 0x0000000078000000 - 0x000000007FFFFFFF (128M used)
[    4.837714] radeon 0000:01:05.0: GTT: 512M 0x0000000080000000 - 0x000000009FFFFFFF
[    4.837787] [drm] Detected VRAM RAM=128M, BAR=256M
[    4.837839] [drm] RAM width 128bits DDR
[    4.839854] [TTM] Zone  kernel: Available graphics memory: 444588 kiB
[    4.839907] [TTM] Zone highmem: Available graphics memory: 972784 kiB
[    4.839959] [TTM] Initializing pool allocator
[    4.840042] [drm] radeon: 128M of VRAM memory ready
[    4.840094] [drm] radeon: 512M of GTT memory ready.
[    4.840160] [drm] GART: num cpu pages 131072, num gpu pages 131072
[    4.866905] [drm] radeon: 2 quad pipes, 1 z pipes initialized.
[    4.872945] [drm] PCIE GART of 512M enabled (table at 0x0000000035A00000).
[    4.873213] radeon 0000:01:05.0: WB enabled
[    4.873301] radeon 0000:01:05.0: fence driver on ring 0 use gpu addr 0x0000000080000000 and cpu addr 0xf592c000
[    4.874929] [drm] Supports vblank timestamp caching Rev 1 (10.10.2010).
[    4.874988] [drm] Driver supports precise vblank timestamp query.
[    4.875055] [drm] radeon: irq initialized.
[    4.875119] [drm] Loading R300 Microcode
[    4.962083] ohci_hcd: USB 1.1 'Open' Host Controller (OHCI) Driver
[    5.088150] ohci-pci: OHCI PCI platform driver
[    5.141799] [drm] radeon: ring at 0x0000000080001000
[    5.141883] [drm] ring test succeeded in 2 usecs
[    5.142064] spurious 8259A interrupt: IRQ7.
[    5.142073] [drm] ib test succeeded in 0 usecs
[    5.142317] [drm] Panel ID String: LPL
[    5.142370] [drm] Panel Size 1280x800
[    5.166305] [drm] radeon legacy LVDS backlight initialized
[    5.166358] [drm] Radeon Display Connectors
[    5.166408] [drm] Connector 0:
[    5.166458] [drm]   VGA-1
[    5.166509] [drm]   DDC: 0x68 0x68 0x68 0x68 0x68 0x68 0x68 0x68
[    5.166560] [drm]   Encoders:
[    5.166610] [drm]     CRT1: INTERNAL_DAC2
[    5.166660] [drm] Connector 1:
[    5.166710] [drm]   LVDS-1
[    5.166760] [drm]   DDC: 0x198 0x198 0x19c 0x19c 0x1a0 0x1a0 0x1a4 0x1a4
[    5.166812] [drm]   Encoders:
[    5.166862] [drm]     LCD1: INTERNAL_LVDS
[    5.426968] [drm] fb mappable at 0xC0040000
[    5.427026] [drm] vram apper at 0xC0000000
[    5.427076] [drm] size 4096000
[    5.427126] [drm] fb depth is 24
[    5.427176] [drm]    pitch is 5120
[    5.427388] radeon 0000:01:05.0: fb0: radeondrmfb frame buffer device
[    5.427442] radeon 0000:01:05.0: registered panic notifier
[    5.427501] [drm] Initialized radeon 2.34.0 20080528 for 0000:01:05.0 on minor 0

-- 
Ondrej Zary
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