Activación DMA para el cdrom

[lachata]

El lun, 25-04-2005 a las 00:39 +0200, Robert escribió:
> En/na lachata ha escrit:
> > El dom, 24-04-2005 a las 19:02 -0300, thirtankara escribió:
> > 
> >>El 24/04/05, lachata<lachata en gmail.com> escribió:
> >>
> >>> al hacer "sudo hdparm -tT /dev/hdc" me sale:
> >>>
> >>>/dev/hdc:
> >>>read() failed: Input/output error
> >>> Timing buffered disk reads:  read() failed: Input/output error
> >>>
> >>
> >>¿Tienes puesto un cd en la unidad?
> > 
> > 
> > 
> > 	Sí, de hecho me lo monta automáticamente sin problema. Me sale ese
> > error antes y después de montado.
> > 



> >>
> >>Según esto ya tienes habilitado el dma
> > 
> > 
> > 
> > 
> > 	Sí, supongo, pero al intentar grabar un cd me saca esto:
> > 
> > 
> > cdrecord: fifo was 0 times empty and 1 times full, min fill was 0%.
> > cdrecord: fifo had 64 puts and 0 gets.
> > cdrecord: Try to use 'driveropts=burnfree'.
> > cdrecord: Max DMA data speed is 9.
> > cdrecord: DMA speed too slow (OK for 9x). Cannot write at speed 16x.
> > cdrecord: WARNING: This causes a high risk for buffer underruns.
> > cdrecord: Permission denied. WARNING: Cannot set priority using
> > setpriority().
> > cdrecord: Operation not permitted. WARNING: Cannot set RR-scheduler
> > SCSI buffer size: 64512
> > cdrecord: Warning: using unofficial version of libscg (ubuntu-0.8ubuntu1
> > '@(#)scsitransp.c	1.91 04/06/17 Copyright 1988,1995,2000-2004 J.
> > Schilling').
> > Linux sg driver version: 3.5.27
> > Warning: Open by 'devname' is unintentional and not supported.
> > scsibus: -2 target: -2 lun: -2
> > devname: '/dev/hdc'
> > scsidev: '/dev/hdc'
> > cdrecord: WARNING: This causes a high risk for buffer underruns.
> > cdrecord: Permission denied. WARNING: Cannot set priority using
> > setpriority().
> > cdrecord: Operation not permitted. WARNING: Cannot set RR-scheduler
> > cdrecord: If you have unexpected problems, please try Linux-2.4 or
> > Solaris.
> > cdrecord: There are unsettled issues with Linux-2.5 and newer.
> > cdrecord: Warning: Running on Linux-2.6.10-5-386
> > cdrecord: Continuing in 5 seconds...
> > cdrecord: Future versions of cdrecord may have different drive dependent
> > defaults.
> > cdrecord: Asuming -tao mode.
> > cdrecord: No write mode specified.
> > 
> > 
> > 
> > 	¿Alguna luz entre tanta tiniebla?
> > 
> > 
> Hola,
> 
> Lo ejecutas como root? está tu usuario en el grupo cdrom??
> 


	Sí, el usuario pertenece al grupo cdrom.