Edit:
Finally found it! I was only searching the forums and wiki. Didn't think to do bug reports for some reason: https://bugs.archlinux.org/task/36107
Examples:
http://filesmelt.com/dl/2013-08-02-2315 … _scrot.png
http://filesmelt.com/dl/2013-08-04-0048 … _scrot.png
I have a Lenovo X1 Carbon. Output of lspci for my graphics processor:
00:02.0 VGA compatible controller [0300]: Intel Corporation 3rd Gen Core processor Graphics Controller [8086:0166] (rev 09) (prog-if 00 [VGA controller])
Subsystem: Lenovo Device [17aa:21f9]
Flags: bus master, fast devsel, latency 0, IRQ 45
Memory at f0000000 (64-bit, non-prefetchable) [size=4M]
Memory at e0000000 (64-bit, prefetchable) [size=256M]
I/O ports at 4000 [size=64]
Expansion ROM at <unassigned> [disabled]
Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
Capabilities: [d0] Power Management version 2
Capabilities: [a4] PCI Advanced Features
Kernel driver in use: i915
Kernel modules: i915
This is not a recent problem. It's been happening through several kernel/graphics upgrades but it only happens occasionally. I have no idea what determines when it will occur.
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