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From: | Avi Kivity |
Subject: | Re: [Qemu-devel] [6989] Fix display breakage when resizing the screen (v2) (Avi Kivity) |
Date: | Mon, 06 Apr 2009 21:32:15 +0300 |
User-agent: | Thunderbird 2.0.0.21 (X11/20090320) |
Stefano Stabellini wrote:
Avi Kivity wrote:Stefano Stabellini wrote:I tried several times to manually reproduce the issue with no luck: if no vnc clients are supposed to be connected, how do you make the cirrus emulated hw do a bitblit?The guest will boot and do it by itself.what is the OS?
In the cases I saw, I think it was Windows. Sorry, I can't be sure and I didn't keep any records.
vga_hw_update() may not actually do anything if the conditions are right, and maybe that's the case here.In any case it makes sense that the problem is in qemu_console_copy() rather than in the rop function itself that only operates on the emulated framebuffer. But calling qemu_console_copy() in cirrus_do_copy() shouldn't be risky because before that, we call vga_hw_update() that should do the resize.I thought about it, but if vga_hw_update does nothing, then qemu_console_copy does nothing too.
True.
There's a backtrace in https://bugzilla.redhat.com/show_bug.cgi?id=494002. I'll also try to generate a good scenario for reproducing this.Without a better understanding of the bug I will refrain from making any suggestion.thanks, that would be very useful (if it doesn't require me to compile kvm it would be even better :)).
If you're running a recent distro it's already built in :) -- I have a truly marvellous patch that fixes the bug which this signature is too narrow to contain.
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