Found that it is only the fan on the ATI card that is running full blast after resume. All other fans are fine. Seems there are other bugs reported for this, i.e. Bug #563156.
lspci -v
<snip>
0a:00.0 VGA compatible controller: ATI Technologies Inc RV530GL [FireGL V3400]
Subsystem: ATI Technologies Inc Device 3b02
Flags: bus master, fast devsel, latency 0, IRQ 57
Memory at d0000000 (64-bit, prefetchable) [size=256M]
Memory at f0500000 (64-bit, non-prefetchable) [size=64K]
I/O ports at 2000 [size=256]
[virtual] Expansion ROM at f0520000 [disabled] [size=128K]
Capabilities: [50] Power Management version 2
Capabilities: [58] Express Endpoint, MSI 00
Capabilities: [80] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable+
Kernel driver in use: radeon
Kernel modules: radeon
<snip>
Found that it is only the fan on the ATI card that is running full blast after resume. All other fans are fine. Seems there are other bugs reported for this, i.e. Bug #563156.
lspci -v
<snip>
0a:00.0 VGA compatible controller: ATI Technologies Inc RV530GL [FireGL V3400]
Subsystem: ATI Technologies Inc Device 3b02
Flags: bus master, fast devsel, latency 0, IRQ 57
Memory at d0000000 (64-bit, prefetchable) [size=256M]
Memory at f0500000 (64-bit, non-prefetchable) [size=64K]
I/O ports at 2000 [size=256]
[virtual] Expansion ROM at f0520000 [disabled] [size=128K]
Capabilities: [50] Power Management version 2
Capabilities: [58] Express Endpoint, MSI 00
Capabilities: [80] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable+
Kernel driver in use: radeon
Kernel modules: radeon
<snip>