Bug 1172077

Summary:	corrupted screen during boot
Product:	[SUSE Linux Enterprise Desktop] Public Beta SUSE Linux Enterprise Desktop 15 SP2	Reporter:	Josef Prazak <ext.josef.prazak>
Component:	X.Org	Assignee:	E-mail List <xorg-enterprise-bugs>
Status:	RESOLVED WONTFIX	QA Contact:	E-mail List <xorg-maintainer-bugs>
Severity:	Normal
Priority:	P2 - High	CC:	alynx.zhou, ext.josef.prazak, jsrain
Version:	Public RC2
Target Milestone:	---
Hardware:	HP
OS:	Other
Whiteboard:
Found By:	---	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---
Attachments:	message boot.msg

Description Josef Prazak 2020-05-26 07:13:59 UTC

After fresh install Gnome X11 selection. During boot screen started to be corrupted and absolutly unreadable, no Xserver start. With disabled spalash screen, first part - kernel loading and initrd is OK, but after some module loading or service star screen started to be corrupted, unreadable. 
It can by fixed with "nomodeset" kernel parameter
HW: Z8G4, Graphic card Nvidia RTX5000

Comment 1 Jiri Srain 2020-05-27 09:34:15 UTC

Could be problem with the kernel driver for your graphics card.

Being more specific (what does "some module loading" mean) would be appreciated to help to find the root cause.

What was the last readable output on the screen?

Comment 2 Josef Prazak 2020-05-28 08:20:34 UTC

Created attachment 838301 [details]
message

Comment 3 Josef Prazak 2020-05-28 08:22:09 UTC

Created attachment 838302 [details]
boot.msg

Comment 4 Josef Prazak 2020-05-28 08:27:18 UTC

next trick to start Xserver is suspend and unsuspend (power button press)

last info which is readable (removed quite from grub2)
-------------------- (part of boot.msg)
usb usb4: We don't know the algorithms for LPM for this host, disabling LPM.
usb usb4: New USB device found, idVendor=1d6b, idProduct=0003, bcdDevice= 5.03
usb usb4: New USB device strings: Mfr=3, Product=2, SerialNumber=1
usb usb4: Product: xHCI Host Controller
usb usb4: Manufacturer: Linux 5.3.18-19-default xhci-hcd
usb usb4: SerialNumber: 0000:2d:00.2
hub 4-0:1.0: USB hub found
hub 4-0:1.0: 4 ports detected
ahci 0000:00:17.0: AHCI 0001.0301 32 slots 8 ports 1.5 Gbps 0xff impl SATA mode
ahci 0000:00:17.0: flags: 64bit ncq sntf led clo only pio slum part ems deso sadm sds apst 
nvme nvme0: 16/0/0 default/read/poll queues
--------------------

Comment 5 Alynx Zhou 2020-05-28 08:56:05 UTC

Looks like nouveau is loaded, please help, thanks!

Comment 6 Stefan Dirsch 2020-05-28 11:51:01 UTC

Unfortunately nouveau gfx driver is a reverse-engineered driver we cannot support at all. So same situation as on previous SLED versions. Install via "nomodeset" and install afterwards the RPM packages for the proprietary driver by NVIDIA. Actually on SLED the repository is added by default if you accept the license for it during installation and the right packages will be autoselected and installed.

Comment 7 Stefan Dirsch 2020-05-28 11:53:50 UTC

Sorry, cannot be fixed.