Intel framebuffer underrun bug has returned...

asked 2016-03-12 04:10:41 -0500

zoltanh721 gravatar image

Hi,

Looks like as I have received the new kernel 4.4.3 the old intel FIFO framebuffer underrun bug has returned too...with huge combined perf latency ([drm:intel_cpu_fifo_underrun_irq_handler [i915]] ERROR CPU pipe A FIFO underrun). It's really gets annoying, as my screen blinking, flickering, and sometimes the picture get torn into pieces by delays. I have tried the old fixes, but seems to me useless - because the bug stays like forever. I tried with the earlier kernels, no use with them. Also something wrong with the USB descriptors, because one of them also replying with no content.... Any idea how can I hunt this down? TY. Should I fill a bugreport, or is there already know for intel again?

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