Bug 245837 - Switch from vga to fb on console fails after t359957
Summary: Switch from vga to fb on console fails after t359957
Status: Closed Not A Bug
Alias: None
Product: Base System
Classification: Unclassified
Component: kern (show other bugs)
Version: 12.1-STABLE
Hardware: amd64 Any
: --- Affects Only Me
Assignee: freebsd-bugs (Nobody)
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2020-04-22 22:45 UTC by rkoberman
Modified: 2020-04-23 01:12 UTC (History)
0 users

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Description rkoberman 2020-04-22 22:45:22 UTC 
After a recent update, my system locked up when attempting to switch from vga to fb. The screen and does not ever proceed. Since the network is not yet up and the system is still single user, I have been able to get more information. I bisected to find that 359957 was the culprit.

If is possible that this is a drm issue that was hidden before this change, so I will post a note about this to x11. I have seen reports on x11@ of problems with systems locking up with blank screens, so this might tie into those.

My system is an old T520 with Sandy Bridge GPU.

Let me know what other information I might be able to obtain.
Comment 1 Yuri Pankov 2020-04-22 23:17:46 UTC 
Just to make sure, you did rebuild the drm port after that change, right? (Yes, I see that __FreeBSD_version was bumped to force that.)
Comment 2 rkoberman 2020-04-23 01:11:20 UTC 
(In reply to Yuri Pankov from comment #1)
How embarrassing! That was it. I have preached the importance of adding ports kernel modules to PORTS_MODULES, but did not add drm-kmod or drm-fbsd12.0-kmod.

I will close the ticket.