Bug 2002392

Summary:	RFE: Provide a way to direct BIOS output to the serial device on x86
Product:	Red Hat Enterprise Linux 9	Reporter:	Richard W.M. Jones <rjones>
Component:	libvirt	Assignee:	Virtualization Maintenance <virt-maint>
Status:	CLOSED DUPLICATE	QA Contact:	Meina Li <meili>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	9.0	CC:	jinqi, lizhu, virt-maint, xuzhang
Target Milestone:	rc	Keywords:	FutureFeature
Target Release:	---	Flags:	pm-rhel: mirror+
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-09-13 09:34:30 UTC	Type:	Feature Request
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	2000845, 2002325

Description Richard W.M. Jones 2021-09-08 16:37:52 UTC

Description of problem:

Related to:
https://bugzilla.redhat.com/show_bug.cgi?id=2002325
"Use -machine graphics=off instead of sga device"
and
https://bugzilla.redhat.com/show_bug.cgi?id=2000845
"RFE: Remove SGA, deprecate cirrus, and set defaults for QEMU machine-types in RHEL9"

libguestfs currently uses <bios useserial=yes> on
x86 platforms to enable full debugging information
from seabios.

libvirt should provide a way to enable BIOS output to
a serial device on x86.  I think the recommended way
is to use -nographic or -machine graphics=off (both
seem to do the same thing).

Version-Release number of selected component (if applicable):

libvirt 7.6.0-2.el9.x86_64

Comment 2 Richard W.M. Jones 2021-09-08 16:39:27 UTC

Thread on qemu-devel:
https://lists.nongnu.org/archive/html/qemu-devel/2021-09/msg02417.html

Comment 3 Richard W.M. Jones 2021-09-13 09:34:30 UTC


*** This bug has been marked as a duplicate of bug 2003092 ***