From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Peter Lieven <lieven-lists@dlhnet.de>
Cc: Robert Ancell <robert.ancell@canonical.com>,
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 17:33:41 +1000 [thread overview]
Message-ID: <1405323221.9343.30.camel@pasglop> (raw)
In-Reply-To: <1405322943.9343.28.camel@pasglop>
On Mon, 2014-07-14 at 17:29 +1000, Benjamin Herrenschmidt wrote:
> 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.
Look for patches from "Robert Ancell <robert.ancell@canonical.com>" on
the xorg-devel list. In fact I'd suggest you test and report if that
works for you, that might give Keithp an incentive for actually merging
them :-)
Cheers,
Ben.
next prev parent reply other threads:[~2014-07-14 7:39 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
2014-07-14 7:33 ` Benjamin Herrenschmidt [this message]
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=1405323221.9343.30.camel@pasglop \
--to=benh@kernel.crashing.org \
--cc=kraxel@redhat.com \
--cc=lieven-lists@dlhnet.de \
--cc=qemu-devel@nongnu.org \
--cc=robert.ancell@canonical.com \
/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).