Hi.
I get a similar bug, but my system doesn't freeze, it directly reboot
without any warning. I looked into all my logs files, nothing is
reported by the system.
I've got the same GPU as the guy who reported this bug : AMD/ATI Juniper
XT [Radeon HD 5770]
lspci :
01:00.0 VGA compatible controller: Advanced Micro Devices, Inc.
[AMD/ATI] Juniper XT [Radeon HD 5770] (prog-if 00 [VGA controller])
Subsystem: Gigabyte Technology Co., Ltd Juniper XT [Radeon HD 5770]
Flags: bus master, fast devsel, latency 0, IRQ 5, NUMA node 0
Memory at d0000000 (64-bit, prefetchable) [size=256M]
Memory at fdfc0000 (64-bit, non-prefetchable) [size=128K]
I/O ports at ae00 [size=256]
[virtual] Expansion ROM at 000c0000 [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
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Capabilities: [150] Advanced Error Reporting
Kernel modules: radeon
Regards.