From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Peter Lieven <lieven-lists@dlhnet.de>
Cc: Gerd Hoffmann <kraxel@redhat.com>, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PULL 3/3] cirrus: Fix host CPU blits
Date: Mon, 14 Jul 2014 17:29:03 +1000 [thread overview]
Message-ID: <1405322943.9343.28.camel@pasglop> (raw)
In-Reply-To: <53C385BA.4090601@dlhnet.de>
On Mon, 2014-07-14 at 09:24 +0200, Peter Lieven wrote:
> it seems you have digged into the cirrus code recently. Have you an idea how to
> fix the issue with the graphics corruption for cirrus vga and recent X Server versions?
>
> E.g. take an Ubuntu 14.04 Desktop CD, boot it into live mode and open terminal.
>
> I have tried to debug it a little, but I have no clue how to solve this. I tried to get
> hands on a real hardware Cirrus Logic Graphics card and test if this happens there as well,
> but I had no chance to get one.
I *think* it is a X server side bug. They broke 24bpp packed pixel
format. I've seen patches submitted to the Xorg list fairly recently by
somebody from canonical.
You can test by creating an xorg.conf to force the display to 16bpp
instead of 24 and see if that helps.
Cheers,
Ben.
next prev parent reply other threads:[~2014-07-14 7:29 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-11 10:24 [Qemu-devel] [PULL 0/3] vga: some cirrus fixes Gerd Hoffmann
2014-07-11 10:24 ` [Qemu-devel] [PULL 1/3] cirrus_vga: adding sanity check for vram size Gerd Hoffmann
2014-07-11 10:24 ` [Qemu-devel] [PULL 2/3] cirrus: Fix build of debug code Gerd Hoffmann
2014-07-11 10:24 ` [Qemu-devel] [PULL 3/3] cirrus: Fix host CPU blits Gerd Hoffmann
2014-07-14 7:24 ` Peter Lieven
2014-07-14 7:29 ` Benjamin Herrenschmidt [this message]
2014-07-14 7:33 ` Benjamin Herrenschmidt
2014-07-14 8:28 ` Peter Lieven
2014-07-14 9:53 ` Gerd Hoffmann
2014-07-14 12:56 ` Peter Lieven
2014-07-14 16:03 ` Gerd Hoffmann
2014-07-11 17:47 ` [Qemu-devel] [PULL 0/3] vga: some cirrus fixes Peter Maydell
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1405322943.9343.28.camel@pasglop \
--to=benh@kernel.crashing.org \
--cc=kraxel@redhat.com \
--cc=lieven-lists@dlhnet.de \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).