Hi. An update on this: Nicolas George (2018-07-25): > The device for the audio controller takes about 0.3 seconds to open. I > have just rebooted on 4.16, and with it the delay is imperceptible. (And > yes, 0.3 seconds for that is a problem for me.) The audio device is > listed as "ALC892 Analog". This was documented in the ChangeLog (not in so many words), and the fix is a module option: options snd-hda-intel power_save=0 > More severe: from time to time, process doing disk access go into D > state but the disk stays idle; the kernel reports nothing at all (in > particular: no reset of the ATA bus). They can stay like that for a few > seconds, a few dozens seconds, and I had a firefox freeze for several > minutes until I got fed up and pressed the power button; the shutdown > was clean. I had no such problem with 4.16.0-2-amd64, and I will be > careful to see if they happen now that I have rebooted with the oldest > kernel. This one was fixed by adding this on the kernel command-line: dm_mod.use_blk_mq=0 scsi_mod.use_blk_mq=0 It is possible that "ahci.mobile_lpm_policy=0" helps too, it was suggested to me as a fix too and I have not yet tested without it, nor with use_blk_mq in modprobe.d instead of the kernel command-line. Regards, -- Nicolas George
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