SLES 11 SP3 Does Not Run in GUI Mode on Systems with ASPEED AST2400 Graphics Controller and Secure Boot Enabled
This document (7015167) is provided subject to the disclaimer at the end of this document.
SUSE Linux Enterprise Server 11 Service Pack 3 (SLES 11 SP3)
UEFI Secure Boot mode is enabled on a system which has an ASPEED
AST2400 graphics controller. An installation of SLES 11 SP3
is started on this system. SLES initially starts in GUI mode,
but then switches over to text mode. The installation can be
completed, but the system stays in text mode. The same system
will install SLES 11 SP3 in GUI mode if Secure Boot is disabled.
The workaround for installing SLES 11 SP3 on a system with an
AST2400 graphics controller and with Secure Boot enabled is to add
the "nomodeset" parameter to the kernel boot command line at the
beginning of the installation. This will force the use of the
fbdev driver during installation and afterwards.
In Secure Boot mode the ast kernel driver is required. The
driver that shipped with SLES 11 SP3 malfunctions and therefore
doesn't load. Due to this failure the system falls back to
The ASPEED AST2400 graphics controller is used in the following
Lenovo ThinkServer RD350, RD450, RD550, RD650, and
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- Document ID:7015167
- Creation Date:
- Modified Date:03-Mar-2020
- SUSE Linux Enterprise Server
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