re: kern/49744 console is blank drm2/radeon

["matthew green via gnats" <gnats-admin%NetBSD.org@localhost>]

The following reply was made to PR kern/49744; it has been noted by GNATS.

From: matthew green <mrg%eterna23.net@localhost>
To: Andrius V <vezhlys%gmail.com@localhost>
Cc: christos%netbsd.org@localhost, gnats-bugs%netbsd.org@localhost
Subject: re: kern/49744 console is blank drm2/radeon
Date: Wed, 10 Jun 2026 16:27:50 +1000

 > I suggest to apply
 > https://github.com/torvalds/linux/commit/ba806f98f868ce107aa9c453fef751de99=
 > 80e4af
 > to our radeon driver, which forces PCI mode for all radeon(4) cards.
 >
 > Linux users were reporting similar issues, thus devs just gave up and
 > forced PCI mode for all cards. It probably may impact performance on
 > some cards, but gives stability others.
 >
 > I faced same stalls on Radeon 9550 AGP card, forcing PCI mode makes it
 > work pretty stable.
 
 interesting find!
 
 i'm going to try this on my failing system.
 
 i'm sad to hear you are seeing issues on the 9550 card, but
 i guess that this PR's original bug is solved, and this is 
 actually a different one.
 
 thanks.
 
 
 .mrg.