Arch Linux

steoguitar

Member

Registered: 2015-04-23

Posts: 56

after cpu change system freeze

hi, I've just changed my old p6200 CPU with a Intel i7 m620 same chipset.
on Windows it seems to be good after some stress tests...
on arch it goes on kernel panic...
system/mouse/music are blocked and the caps led starts to blink
I tried to uninstall/install intel-video driver but with no result...
the only trace I found is at boot:

cpu pipe a fifo underrun
pch transcoder a fifo underrun

what can be the problem?

seth

Member

From: Won't reply 2 private help req

Registered: 2012-09-03

Posts: 78,874

Re: after cpu change system freeze

lack of microcode updates, iommu bug, driver bug in i915/drm (depending on how Xorg was/is configured) - the error message should be a bit longer than that and point to the actually affected module

For a start, https://wiki.archlinux.org/index.php/Microcode and add "intel_iommu=off" to the kernel parameters. Then produce the actual messages and elaborate on the conditions that cause this (are X11/wayland crucial etcetc)

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