X86 Smp Kernel May Panic On Xw9300 Or Xw4300 After The X Server Starts With The Accelerated Nvidia Driver; Description; Scope; X86 Or Amd64/Em64T Audio On Xw4300 Is Muted By Default - HP xw3400 User Manual

x86 SMP Kernel May Panic on xw9300 or xw4300 After the X Server
Starts with the Accelerated NVidia Driver.

DESCRIPTION

If your system meets all the criteria listed in the "scope" section below, your system may hang and the
kernel may panic in __change_page_attr when you start the X server or shortly thereafter.

SCOPE

HP xw4300 or xw9300 Workstation system with:
RHEL4U2 WS x86 SMP kernel (2.6.9-22.ELsmp)
•
NVidia accelerated graphics driver installed & configured
•

RESOLUTION

HP recommends that one of the following be selected:
RHEL4 U2 not be used until Red Hat has provided a new errata kernel which resolves this
•
issue, or
Run the accelerated Nvidia driver only with the UP kernel, or
•
Unconfigured the accelerated Nvidia driver and thus use the vesa driver :
•
1. Boot the UP kernel.
2. As root, run the following to unconfigure the accelerated Nvidia driver.
# /opt/hp/graphics/nvidia/unconfigure
3. Reboot to the SMP kernel.
See Red Hat's Knowledge Base for additional information:
http://kbase.redhat.com/faq/FAQ_85_6976.shtm
Red Hat expect to have this issue resolved in an errata kernel by October 26, 2005. Please refer to
the above Red Hat Knowledge base as well as this advisory for updated information.

x86 or AMD64/EM64T Audio on xw4300 is Muted by Default

DESCRIPTION
Red Hat Enterprise Linux 4 Update 2 [x86 and AMD64/EM64T] audio on xw4300 cannot be heard
at firstboot because the internal speakers are muted by default. This is true even after the system is up
and running. Note that the headphones via the front jack or back jack are unmuted, so no changes
are needed to hear audio from your headphones.
SCOPE
HP xw4300 Workstation system running RHEL4U2.
RESOLUTION
In order to hear audio from the internal speakers on the xw4300, you must
1. From the command line, start 'alsamixer' and unmute the Mono slider.
2. From the panel, select Red Hat -> Sound & Video -> Volume Control and adjust the Mono
slide upwards.
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