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+--------------------
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+
+qemu/kvm SDL over ssh -X broken
+
+qemu/kvm by default uses SDL to render the output of its emulated VGA graphics.
+This is broken over ssh -X since quite a while.
+The only workaround I know, is to use qemu -vnc :0
+and connect using vncviewer
+
+
+How To Reproduce:
+1. zypper in qemu
+2. ssh -X localhost qemu -cdrom ANYISOFILE
+
+Actual Results:
+qemu hangs in an endless loop on the BIOS display screen
+
+Expected Results:
+should boot up the iso as 0.10 versions did
+
+Reproducible: Always
+
+
+this is what broke it:
+$ git bisect bad
+c18a2c360e3100bbd71162cf922dcd8c429a8b71 is first bad commit
+commit c18a2c360e3100bbd71162cf922dcd8c429a8b71
+Author: Stefano Stabellini <email address hidden>
+Date:   Wed Jun 24 11:58:25 2009 +0100
+
+    sdl zooming
+
+    Hi all,
+    this patch implements zooming capabilities for the sdl interface.
+    A new sdl_zoom_blit function is added that is able to scale and blit a
+    portion of a surface into another.
+    This way we can enable SDL_RESIZABLE and have a real_screen surface with
+    a different size than the guest surface and let sdl_zoom_blit take care
+    of the problem.
+
+    Signed-off-by: Stefano Stabellini <email address hidden>
+    Signed-off-by: Anthony Liguori <email address hidden>
+
+:100644 100644 a06c9bfc22cc6de1c6e5e9068d6bf59d89613767 f8dc5065dd27010bfdbb6bcfb0c6e3af25024cdb M      Makefile
+:100644 100644 417217582363a87ee67e746ba798e285a64b6cdc 35183399f65de6f50f3baa4767ab7d4d11d45bca M      console.h
+:100644 100644 178b5532b8d9dd2194a8662fbfdcd49b4bc04222 d81399e51276e1c97fa1f7272ef16ea4c312b51b M      sdl.c
+:000000 100644 0000000000000000000000000000000000000000 56d3604fc3d79e4cc4622be8437c78bf70075da3 A      sdl_zoom.c
+:000000 100644 0000000000000000000000000000000000000000 33dc63408b43a37fd6b1acde3fa62b1a51315e75 A      sdl_zoom.h
+:000000 100644 0000000000000000000000000000000000000000 64bbca849bd3af678c2259b4d8cc0e48c6a6b43c A      sdl_zoom_template.h
+
+
+This problem occurs on both Debian and openSUSE.
+
+One possible way to get X11-forwarding back on qemu master is to disable zoom by this patch.
+
+But I do not know why the do_sdl_resize function should be problematic.
+There is probably a better solution.
+
+Hi,
+
+I tried this with a current (git) build, and I'm not able to reproduce it.
+
+I do see a problem with a bad initial SDL window size (its much too small) on a remote machine over a moderate-level network (wireless LAN). I don't see that when ssh-ing to localhost (even though both hosts are basically the same).
+
+I do see differences between current (git) qemu and the 0.12.5 version. Current git boots the ISO, but doesn't appear to get to the login screen.
+
+I'm not sure what the differences between our configurations are. I have SDL 1.2.14-6ubuntu3
+
+Still investigation.
+
+Brad
+
+
+
+I now found that it depends on my client side. The bug happens when I ssh -XC from my netbook with 1024x600(intel)  to a server, but when I ssh -XC to the same server from my laptop with 1024x768(fbdev), then it works.
+So might be that the scaling code that made the difference in my bisecting, is only used for small screens.
+
+I can confirm this:
+
+My client: 
+
+Ubuntu 12.04 LTS via ssh -X with Gnome - Terminal 3.4.1.1 and compiz enabled
+3.2.0-33-generic #52-Ubuntu SMP Thu Oct 18 16:29:15 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
+
+Can you still reproduce this issue with the latest version of QEMU, with the latest version of SDL?
+
+It seems to be working now with current versions, so has probably been fixed somewhere.
+
+OK, thanks a lot for testing it again!
+