Comment 17 for bug 539851

This bug also affects me (Ubuntu 10.10beta, x86).
It shows itself as periodical hangs for a few seconds, after which following lines were found in syslog:
[drm:radeon_dvi_detect] *ERROR* DVI-I-1: probed a monitor but no|invalid EDID
[drm:drm_edid_block_valid] *ERROR* EDID checksum is invalid, remainder is 128

2sam tygier: thank you, the workaround help.
Here is excerpt from lspci -vvnn after setting 'radeon.modeset=0'

01:00.0 VGA compatible controller [0300]: ATI Technologies Inc RV516 [Mobility Radeon X1350] [1002:7196] (prog-if 00 [VGA controller])
 Subsystem: Hewlett-Packard Company Device [103c:30d7]
 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
 Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
 Latency: 0, Cache Line Size: 64 bytes
 Interrupt: pin A routed to IRQ 16
 Region 0: Memory at d0000000 (32-bit, prefetchable) [size=128M]
 Region 1: I/O ports at 2000 [size=256]
 Region 2: Memory at d8400000 (32-bit, non-prefetchable) [size=64K]
 [virtual] Expansion ROM at d8420000 [disabled] [size=128K]
 Capabilities: <access denied>
 Kernel modules: radeon