https://bugzilla.kernel.org/show_bug.cgi?id=26942
Summary: radeon: screen distortion on resume Product: Drivers Version: 2.5 Kernel Version: 2.6.37 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) AssignedTo: drivers_video-dri@kernel-bugs.osdl.org ReportedBy: spoonb@exherbo.org Regression: Yes
With v2.6.37, the radeon KMS drivers, and my RV730 I get a distorted screen when resuming from suspend to ram. This does not occur with v2.6.36 and I have bisected to this commit:
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From ba032a58d1f320039e7850fb6e8651695c1aa571 Mon Sep 17 00:00:00 2001
From: Alex Deucher alexdeucher@gmail.com Date: Mon, 4 Oct 2010 17:13:01 -0400 Subject: [PATCH] drm/radeon/kms: rework spread spectrum handling
This patch reworks spread spectrum handling to enable it properly on lvds and DP/eDP links. It also fixes several bugs in the old spread spectrum code.
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lspci -v
----------------------------------------------------------------------------- 03:00.0 VGA compatible controller: ATI Technologies Inc RV730 PRO [Radeon HD 4650] (prog-if 00 [VGA controller]) Subsystem: PC Partner Limited Device 9498 Flags: bus master, fast devsel, latency 0, IRQ 40 Memory at e0000000 (64-bit, prefetchable) [size=256M] Memory at fb9e0000 (64-bit, non-prefetchable) [size=64K] I/O ports at ee00 [size=256] [virtual] Expansion ROM at fb900000 [disabled] [size=128K] Capabilities: [50] Power Management version 3 Capabilities: [58] Express Legacy Endpoint, MSI 00 Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?> Kernel driver in use: radeon
03:00.1 Audio device: ATI Technologies Inc RV710/730 Subsystem: PC Partner Limited R700 Audio Device [Radeon HD 4000 Series] Flags: bus master, fast devsel, latency 0, IRQ 44 Memory at fb9fc000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 3 Capabilities: [58] Express Legacy Endpoint, MSI 00 Capabilities: [a0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [100] Vendor Specific Information: ID=0001 Rev=1 Len=010 <?> Kernel driver in use: HDA Intel -----------------------------------------------------------------------------
Let me know what else I can provide.