Mailinglist Archive: radeonhd (290 mails)

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[radeonhd] [Bug 16969] RS780 badly restores VGA console
  • From: bugzilla-daemon@xxxxxxxxxxxxxxx
  • Date: Mon, 11 Aug 2008 00:52:09 -0700 (PDT)
  • Message-id: <20080811075210.33A17130078@xxxxxxxxxxxxxxxxxxxxxxxx>
http://bugs.freedesktop.org/show_bug.cgi?id=16969





--- Comment #4 from Egbert Eich <eich@xxxxxxxxxxxxxxxxxxx> 2008-08-11 00:52:08
PST ---
(In reply to comment #3)
Luc Verhaegen said that this only happens on cards and IGPs with broken BIOS,
not all of them, but fixing it won't be a problem since we already do a sanity
check beofre applying any hacks, so non-broken cases won't be affected.

Egbert, what board do you have?

I don't think that's the reason.
Since VGA has its own VGAHDP we should not compare the VGAHDP address to the
HDP address but the the MC_FB_LOCATION (or a comparable register on later
hardware). The reason why most people are not seeing this bug is because the
kernel restores everything. I cannot even see a restore problem when I
completely disable VGA save/restore. This is because the Linux kernel does font
save restore as well as repaint the screen.
Looking at the screen shot suggests the following: the space character in the
font data is broken while the fonts are ok?
What do you get when you type on the console? Does a space also produce a
broken character?
What happens when you do 'setfont' on the console?


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