I've got a new Thinkpad x220 which won't wake up from suspend with 2.6.39, but works fine with 2.6.37.
I bisected it down to this cset: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=4efe070896e1f7373c98a13713e659d1f5dee52a drm/i915: make the blitter report buffer modifications to the FBC unit Without this change, blits to the front buffer won't invalidate FBC state, causing us to scan out stale data. Make sure we update these bits on every FBC enable, since they may get clobbered if we shut off the display. After this changeset, resuming wakes up the backlight, but fails to restore video and leaves the CPU spinning and the keyboard unresponsive. Before this changeset, but some distance after 2.6.37, most of the screen isn't painted, but I can still log on and successfully suspend/resume. I've attached my .config and lscpi output. -- Mathematics is the supreme nostalgia of our time. -------------- next part -------------- A non-text attachment was scrubbed... Name: .config Type: text/x-mpsub Size: 69000 bytes Desc: not available URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20110521/f0405dfa/attachment-0001.bin> -------------- next part -------------- 00:00.0 Host bridge: Intel Corporation 2nd Generation Core Processor Family DRAM Controller (rev 09) Subsystem: Lenovo Device 21da Flags: bus master, fast devsel, latency 0 Capabilities: <access denied> Kernel driver in use: agpgart-intel 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) (prog-if 00 [VGA controller]) Subsystem: Lenovo Device 21da Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at d0000000 (64-bit, non-prefetchable) [size=4M] Memory at c0000000 (64-bit, prefetchable) [size=256M] I/O ports at 5000 [size=64] Expansion ROM at <unassigned> [disabled] Capabilities: <access denied> Kernel driver in use: i915 00:16.0 Communication controller: Intel Corporation 6 Series Chipset Family MEI Controller #1 (rev 04) Subsystem: Lenovo Device 21da Flags: bus master, fast devsel, latency 0, IRQ 11 Memory at d2625000 (64-bit, non-prefetchable) [size=16] Capabilities: <access denied> 00:16.3 Serial controller: Intel Corporation 6 Series Chipset Family KT Controller (rev 04) (prog-if 02 [16550]) Subsystem: Lenovo Device 21da Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 11 I/O ports at 50e0 [size=8] Memory at d262b000 (32-bit, non-prefetchable) [size=4K] Capabilities: <access denied> 00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (rev 04) Subsystem: Lenovo Device 21ce Flags: bus master, fast devsel, latency 0, IRQ 10 Memory at d2600000 (32-bit, non-prefetchable) [size=128K] Memory at d262a000 (32-bit, non-prefetchable) [size=4K] I/O ports at 5060 [size=32] Capabilities: <access denied> 00:1a.0 USB Controller: Intel Corporation 6 Series Chipset Family USB Enhanced Host Controller #2 (rev 04) (prog-if 20 [EHCI]) Subsystem: Lenovo Device 21da Flags: bus master, medium devsel, latency 0, IRQ 16 Memory at d2629000 (32-bit, non-prefetchable) [size=1K] Capabilities: <access denied> Kernel driver in use: ehci_hcd 00:1b.0 Audio device: Intel Corporation 6 Series Chipset Family High Definition Audio Controller (rev 04) Subsystem: Lenovo Device 21da Flags: bus master, fast devsel, latency 0, IRQ 22 Memory at d2620000 (64-bit, non-prefetchable) [size=16K] Capabilities: <access denied> Kernel driver in use: HDA Intel 00:1c.0 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 1 (rev b4) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=02, subordinate=02, sec-latency=0 Capabilities: <access denied> 00:1c.1 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 2 (rev b4) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=03, subordinate=03, sec-latency=0 Memory behind bridge: d2500000-d25fffff Capabilities: <access denied> 00:1c.3 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 4 (rev b4) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=05, subordinate=0c, sec-latency=0 I/O behind bridge: 00004000-00004fff Memory behind bridge: d1d00000-d24fffff Prefetchable memory behind bridge: 00000000d0400000-00000000d0bfffff Capabilities: <access denied> 00:1c.4 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 5 (rev b4) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=0d, subordinate=0d, sec-latency=0 I/O behind bridge: 00003000-00003fff Memory behind bridge: d1500000-d1cfffff Prefetchable memory behind bridge: 00000000d0c00000-00000000d13fffff Capabilities: <access denied> 00:1c.6 PCI bridge: Intel Corporation 6 Series Chipset Family PCI Express Root Port 7 (rev b4) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0 Bus: primary=00, secondary=0e, subordinate=0e, sec-latency=0 Memory behind bridge: d1400000-d14fffff Capabilities: <access denied> 00:1d.0 USB Controller: Intel Corporation 6 Series Chipset Family USB Enhanced Host Controller #1 (rev 04) (prog-if 20 [EHCI]) Subsystem: Lenovo Device 21da Flags: bus master, medium devsel, latency 0, IRQ 23 Memory at d2628000 (32-bit, non-prefetchable) [size=1K] Capabilities: <access denied> Kernel driver in use: ehci_hcd 00:1f.0 ISA bridge: Intel Corporation 6 Series Chipset Family LPC Controller (rev 04) Subsystem: Lenovo Device 21da Flags: bus master, medium devsel, latency 0 Capabilities: <access denied> 00:1f.2 IDE interface: Intel Corporation 6 Series Chipset Family 4 port SATA IDE Controller (rev 04) (prog-if 8a [Master SecP PriP]) Subsystem: Lenovo Device 21da Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 19 I/O ports at 01f0 [size=8] I/O ports at 03f4 [size=1] I/O ports at 0170 [size=8] I/O ports at 0374 [size=1] I/O ports at 50b0 [size=16] I/O ports at 50a0 [size=16] Capabilities: <access denied> Kernel driver in use: ata_piix 00:1f.3 SMBus: Intel Corporation 6 Series Chipset Family SMBus Controller (rev 04) Subsystem: Lenovo Device 21da Flags: medium devsel, IRQ 11 Memory at d2624000 (64-bit, non-prefetchable) [size=256] I/O ports at efa0 [size=32] 00:1f.5 IDE interface: Intel Corporation 6 Series Chipset Family 2 port SATA IDE Controller (rev 04) (prog-if 85 [Master SecO PriO]) Subsystem: Lenovo Device 21da Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 19 I/O ports at 50c8 [size=8] I/O ports at 50ec [size=4] I/O ports at 50c0 [size=8] I/O ports at 50e8 [size=4] I/O ports at 5090 [size=16] I/O ports at 5080 [size=16] Capabilities: <access denied> Kernel driver in use: ata_piix 03:00.0 Network controller: Intel Corporation Centrino Advanced-N 6205 (rev 34) Subsystem: Intel Corporation Centrino Advanced-N 6205 AGN Flags: bus master, fast devsel, latency 0, IRQ 17 Memory at d2500000 (64-bit, non-prefetchable) [size=8K] Capabilities: <access denied> Kernel driver in use: iwlagn 0d:00.0 System peripheral: Ricoh Co Ltd Device e823 (rev 04) (prog-if 01) Subsystem: Lenovo Device 21da Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at d1500000 (32-bit, non-prefetchable) [size=256] Capabilities: <access denied> Kernel driver in use: sdhci-pci 0e:00.0 USB Controller: NEC Corporation uPD720200 USB 3.0 Host Controller (rev 04) (prog-if 30 [XHCI]) Subsystem: Lenovo Device 21da Flags: bus master, fast devsel, latency 0, IRQ 11 Memory at d1400000 (64-bit, non-prefetchable) [size=8K] Capabilities: <access denied>
