Messages in this thread |  | | Date | Sun, 12 Nov 2000 17:16:49 +0100 (CET) | From | Igmar Palsenberg <> | Subject | Re: sound problems caused by masking irq for too long |
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On Sun, 12 Nov 2000, Alexander V. Lukyanov wrote:
> Hi! > > In some cases sound gets interrupted for a moment, this happens in two > occasions. When unmaskirq flag is off on ide cdrom and it is accessed, > and when tdfxfb console (800x600) flashes (tput flash, or `set bell-style > visible' in .inputrc). > > It seems the problem is caused by masking irq for too long, and then > the sound dma buffer underruns. This is fixed by unmasking irq for ide > cdrom by `hdparm -u1 /dev/cdrom', and by changing spin_(un)lock_irq > in console.c to spin_(un)lock_bh. > > This was observed on 2.4.0-pre10, the problem with ide also exists on > 2.2.17, the console.c in 2.2.17 only disables CONSOLE_BH.
The above story also explains why my sound 'hickups' when I switch from console to X (yes, and I do that a lot).
Is this a recent change from 2.2.15 -> >= 2.2.16 or so ?
> The audio card is old awe32 (isa), sound driver is modular.
This is a SB16 PnP
Igmar
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