Sam460ex Audio & Video freeze with PCIEx1 CMI8738 Sound Card

[Spectre660]

On Sam460ex using pciex1 CMI8738 with AmigaOS 4.1FE causes frequent audio and video freezes during video playback with random noise during freeze. after about 30 seconds normal playback returns until next freeze. Happens with Mplayer ,DVplayer and alpha Emotion player. Audio playback with out video works ok .Video card is Radeon HD7750 with RadeonHD 2.18 driver .
Audio and video playback work ok with a pciex1 Envy24HT or onboard sound .

[tonyw]

What is the version of Devs/AHI/cmi8738.audio ?

[Spectre660]

cmi8738.audio 5.17 (11/04/2006)

[Spectre660]

Similar issue seen with X5000 .

viewtopic.php?f=57&t=3625

[Spectre660]

It is possible that some cards have slightly different versions of something.
(maybe the Asmedia 1083 bridge chip ?)
https://lists.gt.net/linux/kernel/1484406
https://git.kernel.org/cgit/linux/kerne ... 2751d6df85

[Spectre660]

My card has the ASM 1083 bridgechip rev 1 which is know to have problems with DMA .
Newer cards with the rev 3 chip should work ok .