Red Hat Bugzilla – Bug 143548
Kernel support for ISA PnP devices disabled
Last modified: 2012-06-20 12:10:30 EDT
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Description of problem:
In the specified kernel, ISA PnP support is missing. So are a number
of kernel modules for not very recent hardware. On both of a PR440FX
based workstation and an IBM Thinkpad 600e, the sound device is some
integrated CS423X chip which is connected to the system via the ISA
bus interface. Sound works great for both of them under FC2 (and the
first computer under FC3). Please consider reenabling ISA PnP support
in the kernel.
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Install RHEL4 Beta 2.
2. Check the presence of the kernel log message "isapnp: Scanning for
3. Note that the "/lib/modules/2.6.9-1.675_EL/kernel/sound/isa"
directory is essentially empty.
Actual Results: No sound available.
Expected Results: Sound works correctly as under FC2.
There is no entry in the kernel RPM changelog indicating that or why
ISA PnP support has been dropped. In the RHEL3 kernels, it seems to be
reassigning to product management.
Internal RFE bug #148026 entered; will be considered for future releases.
Support for ISA based CS423X sound devices is also missing in RHEL 5.3.
Thank you for submitting this issue for consideration in Red Hat Enterprise Linux. The release for which you requested us to review is now End of Life.
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