Messages in this thread | | | Date | Thu, 15 Apr 2010 23:19:33 +0200 | From | Éric Piel <> | Subject | Re: [REGRESSION bisected] Sound goes too fast due to commit 7b3a177b0 |
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Op 14-04-10 18:01, Takashi Iwai schreef: : >> >> I don't fully grasp the meaning of bdl_pos_adj, so I don't know if it's >> a bug to not play correctly when forcing it to 0. Is it? > > It might be that this was for reducing the load by position > correction mechanism. You might see the hd-audio kernel thread in a > high CPU usage. This might be fixed also by position_fix=1, though. Yes, I had added this option after a regression in the previous kernel which causes the hd-audio thread to take 50% of a CPU. Eventually, it was fixed and not needed anymore. So I guess in the case of my laptop, this is not really a regression, because everything is fine with the default values.
In the case of Frank, this looks more like a regression, or at least a bug to solve, because this happens with the default options. However, this report should be taken with care, because this happens on a 2.6.33.2 kernel made by Mandriva, containing many alsa patches of 2.6.34. Frank, how possible would it be to test a 2.6.34-rc4 kernel from Linus?
If this bug is confirmed, Takashi, do you know any way to choose automatically position_fix=1 when needed?
See you, Eric
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