LinuxQuestions.org
LinuxAnswers - the LQ Linux tutorial section.
Go Back   LinuxQuestions.org > Forums > Linux Forums > Linux - General
User Name
Password
Linux - General This Linux forum is for general Linux questions and discussion.
If it is Linux Related and doesn't seem to fit in any other forum then this is the place.

Notices



Reply
 
Search this Thread
Old 11-22-2004, 08:56 PM   #1
mritch
Member
 
Registered: Nov 2003
Location: austria
Distribution: debian
Posts: 667

Rep: Reputation: 30
[KERNEL] 2.6 preempt no smooth audio?


successfully working on a 2.4.2x i switched to 2.6
in need of the acpi features to put the libretto to
memsuspend. however, i can't get unbroken play
-back (file or stream) anymore.
disabling 2.6 preempt on makes it bit better, but don't
reach the behavior of a preempt & lowlat'd 2.4.2x.

sound scratches are mainly when switching through
workspaces (lot of drawing/cpu). 2.4 is all right.

mobile p233 mmx, 64M

[...] kernel
kernel: ad1848/cs4248 codec driver Copyright (C) by Hannu Savolainen 1993-1996
kernel: opl3sa2: Found OPL3-SA3 (YMF715E or YMF719E)
kernel: YM3812 and OPL-3 driver Copyright (C) by Hannu Sav olainen, Rob Hooft 1993-1996
[...]

[...] XFree86log
(--) PCI:*(0:4:0) Neomagic Corporation NM2160 [MagicGraph 128XD] rev 1, Mem @ 0x
fd000000/24, 0xffc00000/21, 0xffb00000/20
[...]

[...] lspci
0000:00:04.0 VGA compatible controller: Neomagic Corporation NM2160 [MagicGraph 128XD] (rev 01) (prog-if 00 [VGA])
Subsystem: Toshiba America Info Systems: Unknown device 0001
Control: I/O+ Mem+ BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B-
Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR-
Interrupt: pin A routed to IRQ 255
Region 0: Memory at fd000000 (32-bit, prefetchable) [size=16M]
Region 1: Memory at ffc00000 (32-bit, non-prefetchable) [size=2M]
Region 2: Memory at ffb00000 (32-bit, non-prefetchable) [size=1M]
[...]

the complete system hardware is quite exotic; the lspci output
is scary, so are the dmesg-error messages from acpi (but, iirc,
harmless and with 2.4 also). ide-dma and changing pci latency
timers don't work. [plug'n'pray/acpi]toshiba controller & yenta
compatible pcmcia/pccard controller..

isn't preempt involved in trying to get the system more responsible
and to work with audio/video/media more comfortable?
if i'd like to switch back: is there a backport from the current (2.6)
acpi subsystem for 2.4-kernel's avail?

now, 2.4 *is* fast / responsive! what do do?

thx,
mritch.

Last edited by mritch; 11-24-2004 at 12:47 AM.
 
Old 11-24-2004, 12:52 AM   #2
mritch
Member
 
Registered: Nov 2003
Location: austria
Distribution: debian
Posts: 667

Original Poster
Rep: Reputation: 30
ideas?
 
Old 11-24-2004, 01:25 AM   #3
hutuworm
Member
 
Registered: Aug 2004
Posts: 130

Rep: Reputation: 15
2.6 kernel is not so stable, so you may want to upgrade to the latest version to follow the development pace, if the problem still exists in the latest version, you may issue a bug report to the kernel mailing list.
 
  


Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Smooth 2D experience? Macky Slackware 0 10-22-2005 10:17 AM
Smooth Fonts dj9928 Linux - Software 4 05-02-2005 02:36 PM
Preemptible Kernel (PREEMPT)---yes or no? ganja_guru Linux - Software 8 09-05-2004 12:29 PM
Slack10 2.4.26 w/ Preempt and ALSA shadyvlad Slackware 1 08-18-2004 02:49 PM
Whitepaper: Preempt v. Low-Latency Patch jeremy Linux - General 1 03-22-2002 03:07 PM


All times are GMT -5. The time now is 10:28 PM.

Main Menu
Advertisement
My LQ
Write for LQ
LinuxQuestions.org is looking for people interested in writing Editorials, Articles, Reviews, and more. If you'd like to contribute content, let us know.
Main Menu
Syndicate
RSS1  Latest Threads
RSS1  LQ News
Twitter: @linuxquestions
identi.ca: @linuxquestions
Facebook: linuxquestions Google+: linuxquestions
Open Source Consulting | Domain Registration