[PlanetCCRMA] CD-ROM writing trouble with rh9 caps kernel?

Fernando Pablo Lopez-Lezcano nando@ccrma.Stanford.EDU
Tue Nov 9 17:15:01 2004

On Tue, 2004-11-09 at 16:23, Chris Miles (PlanetCCRMA) wrote:
> Fernando Pablo Lopez-Lezcano wrote:
> >On Mon, 2004-11-08 at 02:30, Chris Miles (PlanetCCRMA) wrote:
> >>Fernando Pablo Lopez-Lezcano wrote:
> >>>On Fri, 2004-11-05 at 10:56, Chris Miles (PlanetCCRMA) wrote:
> >>>>I've just had major trouble writing some CDs under RedHat 9.
> >>>>
> >>>>I've been running the caps kernel since I found the hangs with the ll 
> >>>>kernel too disruptive - I'd get no keyboard accepted. I liked the disk 
> >>>>speed though!
> >>>>
> >>>>I've found that I could write one CD, but a second would fail with timeouts.
> >>>>
> >>>>Yesterday not even the first CD would write, timing out. Since this was 
> >>>>for work I decided to try the stock red hat kernel (2.4.20-37.9).
> >>>>
> >>>>I still had to power down, turn off at the mains and wait 10 minutes 
> >>>>before it would work and then I was back to normal (apart from the 
> >>>>ruined CDs). Phew :-)
> >>>>
> >>>>Any ideas what to look for? I really need reliable CD writing but I want 
> >>>>my alsa back.
> >>>>I use an ATA CD with hdc=ide-scsi and xcdroast, etc.
> >>>>
> >>>If the ll kernel has problems with your hardware you could try to
> >>>install the redhat based Planet CCRMA kernel and matching alsa drivers.
> >>>That should work as well as the original redhat kernel (it is not as
> >>>new, of course). It is installed with:
> >>>
> >>> apt-get install planetccrma-core-redhat
> >>>(for uniprocessor machines)
> >>>
> >>I've tried both the "caps" kernel and the "ll" kernels.
> >>
> >>I have to give up on the "ll" kernel as the keyboard died regularly. I 
> >>liked its speed though.
> >>
> >>I'm puzzled by the interaction with CD writing. It gets expensive in 
> >>both CDs and the time to cycle the hardware after a problem. At the 
> >>moment I'm not clear what I should be monitoring.
> >>
> >>Perhaps the capability patches upset the ide-scsi timing.
> >
> >I would almost say impossible. The capabilities patch is very small and
> >just enables the ability of processes to pass on capabilities to other
> >processes. It should not affect things like timing or device drivers. 
> The current "stock" kernel is
> 2.4.20-37.9
> "I would almost say impossible." It looks as if I should have another go 
> at the Planet kernels then. 

Maybe. I was referring to the Planet CCRMA Redhat kernel, not the low
latency kernel (which is different and could possibly be the cause of
the problem). 

The RedHat based kernel is pure RedHat except for the capabilities

I know I should upgrade all those kernels......
-- Fernando