Bug 36979 - [2.2.19-7.0.1]emu10k sound driver doesn't provide bass or treble controls anymore
Summary: [2.2.19-7.0.1]emu10k sound driver doesn't provide bass or treble controls any...
Alias: None
Product: Red Hat Linux
Classification: Retired
Component: kernel
Version: 7.0
Hardware: i386
OS: Linux
Target Milestone: ---
Assignee: Michael K. Johnson
QA Contact: Brock Organ
Depends On:
TreeView+ depends on / blocked
Reported: 2001-04-21 14:12 UTC by Manfred Hollstein
Modified: 2007-04-18 16:32 UTC (History)
0 users

Clone Of:
Last Closed: 2002-05-05 08:44:52 UTC

Attachments (Terms of Use)

Description Manfred Hollstein 2001-04-21 14:12:31 UTC
From Bugzilla Helper:
User-Agent: Mozilla/4.77 [en] (X11; U; Linux 2.2.19-7.0.1 i686)

The emu10k sound driver contained in the latest upgrade kernel doesn't
allow to tailor bass or
treble levels anymore; this results in REALLY poor quality of the generated
Some further investigation reveals that all related code is wrapped in
#ifdef TONE_CONTROL ...
#endif in drivers/sound/emu10k/{main,mixer.c}, without any location where
this is actually
enabled/defined. I rebuilt the emu10k.o module using a patch, which you can
find at


and which fixed the problem for me on my SoundBlaster Live! Player 1024.

FWIW, this seems to be related with an entry for 2.4 kernels of RHL 7.1;


Reproducible: Always
Steps to Reproduce:
1.Boot system with 2.2.19-7.0.1 kernel and a sound card with an EMU10K chip
2.Start sound mixer application
3.Look for any controls for bass or treble

Actual Results:  There are no controls available.

Expected Results:  Two sliders (one for bass and one for treble) are
available with 2.2.17-14 (and with my patch
applied on 2.2.19 as well;-) )

Comment 1 Manfred Hollstein 2002-05-05 08:44:47 UTC
This report can be closed, as current versions in RHL 7.2 and 7.3 can utilize
the emu10k1 driver and tools from <http://sourceforge.net/projects/emu10k1>
to enable treble/bass controls.

Comment 2 Michael K. Johnson 2002-05-06 22:39:39 UTC
Thanks for the note!

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