13.101 on Precise-updates broken on RS880 (HD4xxxx)

[Neale Upstone]

Release Ubuntu 12.04.4

I've just been updated from 8.960 to 13.101, and things didn't go at all well.

As far as I can tell fglrx failed to install, as the previous boot gave:

[fglrx] Maximum main memory to use for locked dma buffers: 7506 MBytes.
[fglrx] vendor: 1002 device: 9715 count: 1
[fglrx] ioport: bar 1, base 0xb000, size: 0x100
pci 0000:01:05.0: PCI INT A -> GSI 18 (level, low) -> IRQ 18
pci 0000:01:05.0: setting latency timer to 64
[fglrx] Kernel PAT support is enabled
[fglrx] module loaded - fglrx 8.96.4 [Mar 12 2012] with 1 minors

and after the update:

fglrx: module license 'Proprietary. (C) 2002 - ATI Technologies, Starnberg, GERMANY' taints kernel.
Disabling lock debugging due to kernel taint
[fglrx] Maximum main memory to use for locked dma buffers: 7506 MBytes.
[fglrx:firegl_init_device_list] *ERROR* No supported display adapters were found
[fglrx:firegl_init_module] *ERROR* firegl_init_devices failed

Something seems to have got broken in HDMI support here...

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Neale Upstone (nealeu)]

It occurred to me to point out what may not be obvious. After 8.960, AMD split Catalyst between to anything 4xxx and earlier being legacy (which is not v nice to those with an HP dv7 both 4xxx and 5xxx). A quick search of "fglrx legacy" shows up lots of resulting chaos.

I haven't given 13.x Ubuntu releases a go on this hardware, but I suspect there needs to be something around to ensure that the correct fglrx is active.