diff options
Diffstat (limited to 'doc/source')
-rw-r--r-- | doc/source/admin/drivers/redfish.rst | 2 | ||||
-rw-r--r-- | doc/source/admin/interfaces/boot.rst | 16 | ||||
-rw-r--r-- | doc/source/install/include/kernel-boot-parameters.inc | 4 |
3 files changed, 15 insertions, 7 deletions
diff --git a/doc/source/admin/drivers/redfish.rst b/doc/source/admin/drivers/redfish.rst index b82d24ec8..6628f48df 100644 --- a/doc/source/admin/drivers/redfish.rst +++ b/doc/source/admin/drivers/redfish.rst @@ -214,7 +214,7 @@ user-specified kernel command line parameters. .. code-block:: bash baremetal node set node-0 \ - --driver-info kernel_append_params="nofb nomodeset vga=normal" + --driver-info kernel_append_params="nofb vga=normal" .. note:: The ``driver_info`` field is supported starting with the Xena release. diff --git a/doc/source/admin/interfaces/boot.rst b/doc/source/admin/interfaces/boot.rst index b9f0bda3e..a4b4cf2a3 100644 --- a/doc/source/admin/interfaces/boot.rst +++ b/doc/source/admin/interfaces/boot.rst @@ -49,7 +49,7 @@ configuration option: .. code-block:: ini [pxe] - kernel_append_params = nofb nomodeset vga=normal + kernel_append_params = nofb vga=normal .. note:: The option was called ``pxe_append_params`` before the Xena cycle. @@ -59,9 +59,9 @@ Per-node and per-instance overrides are also possible, for example: .. code-block:: bash baremetal node set node-0 \ - --driver-info kernel_append_params="nofb nomodeset vga=normal" + --driver-info kernel_append_params="nofb vga=normal" baremetal node set node-0 \ - --instance-info kernel_append_params="nofb nomodeset vga=normal" + --instance-info kernel_append_params="nofb vga=normal" Starting with the Zed cycle, you can combine the parameters from the configuration and from the node using the special ``%default%`` syntax: @@ -74,13 +74,21 @@ configuration and from the node using the special ``%default%`` syntax: Together with the configuration above, the following parameters will be appended to the kernel command line:: - nofb nomodeset vga=normal console=ttyS0,115200n8 + nofb vga=normal console=ttyS0,115200n8 .. note:: Ironic does not do any de-duplication of the resulting kernel parameters. Both kernel itself and dracut seem to give priority to the last instance of the same parameter. +.. warning:: + Previously our documentation listed the Linux kernel parameter + ``nomodeset`` as an option. This option is intended for troubleshooting, + and can greatly degrade performance with Matrox/Aspeed BMC Graphics + controllers which is very commonly used on physical servers. The + performance degredation can greatly reduce IO capacity upon every + console graphics update being written to the screen. + Common options -------------- diff --git a/doc/source/install/include/kernel-boot-parameters.inc b/doc/source/install/include/kernel-boot-parameters.inc index f0da59d60..82b4ecc91 100644 --- a/doc/source/install/include/kernel-boot-parameters.inc +++ b/doc/source/install/include/kernel-boot-parameters.inc @@ -91,7 +91,7 @@ respectively. [pxe] # Additional append parameters for baremetal PXE boot. - kernel_append_params = nofb nomodeset vga=normal console=ttyS0,115200n8 + kernel_append_params = nofb vga=normal console=ttyS0,115200n8 * For node web console configuration is similar with the addition of ``ttyX`` @@ -100,7 +100,7 @@ respectively. [pxe] # Additional append parameters for baremetal PXE boot. - kernel_append_params = nofb nomodeset vga=normal console=tty0 console=ttyS0,115200n8 + kernel_append_params = nofb vga=normal console=tty0 console=ttyS0,115200n8 For detailed information on how to add consoles see the reference documents `kernel params`_ and `serial console`_. |