Bug#1059211: qemu-system-x86: QEMU/KVM guests: Window contents partially not updated
Package: qemu-system-x86 Version: 1:8.2.0+ds-1 Severity: important X-Debbugs-Cc: rz49...@gmx.net Dear Maintainer, after the latest QEMU packages update, I noticed strange redraw issues in VM guests’ X windows. I use XFCE on Debian Bullseye or Sid in all my VM guests. The lightdm logon pad partially does update the username when entering it. In the XFCE terminal window, the lower part (between 3 and 4 lines) only updates after several seconds. In Thunar, the upper part of the windows stays frozen for some seconds, while the lower part is redrawn when scrolling. Mousepad updates of parts of its window are also delayed. The same applies to Firefox. The top-right XFCE user menu does not seem to react to clicks, no menu is shown. Besides from these issues, everything seems to be working normally, no issues when SSHing to the VM guest. X clients access through SSH also works fine. Shutting down the VM guest, downgrading all QEMU packages on the host system to the versions from testing and starting the guest again resolves the issues for me. Kind regards Rainer -- System Information: Debian Release: trixie/sid APT prefers unstable APT policy: (500, 'unstable'), (500, 'testing') Architecture: amd64 (x86_64) Kernel: Linux 6.5.0-5-amd64 (SMP w/8 CPU threads; PREEMPT) Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8), LANGUAGE not set Shell: /bin/sh linked to /usr/bin/dash Init: systemd (via /run/systemd/system) LSM: AppArmor: enabled Versions of packages qemu-system-x86 depends on: ii ipxe-qemu 1.0.0+git-20190125.36a4c85-5.1 ii libaio1 0.3.113-5 ii libbpf1 1:1.3.0-2 ii libc6 2.37-13 ii libcapstone44.0.2-5 ii libfdt1 1.7.0-1 ii libfuse3-3 3.14.0-4 ii libglib2.0-02.78.3-1 ii libgmp102:6.3.0+dfsg-2 ii libgnutls30 3.8.2-1 ii libhogweed6 3.9.1-2 ii libibverbs1 48.0-1 ii libjpeg62-turbo 1:2.1.5-2 ii libnettle8 3.9.1-2 ii libnuma12.0.16-1 ii libpixman-1-0 0.42.2-1 ii libpmem11.13.1-1.1 ii libpng16-16 1.6.40-2 ii librdmacm1 48.0-1 ii libsasl2-2 2.1.28+dfsg1-4 ii libseccomp2 2.5.4-2+b1 ii libslirp0 4.7.0-1 ii libudev1255-1 ii liburing2 2.5-1 ii libvdeplug2 4.0.1-5+b1 ii libzstd11.5.5+dfsg2-2 ii qemu-system-common 1:8.2.0+ds-1 ii qemu-system-data1:8.2.0+ds-1 ii seabios 1.16.3-2 ii zlib1g 1:1.3.dfsg-3 Versions of packages qemu-system-x86 recommends: ii ovmf2023.05-2 ii qemu-block-extra1:8.2.0+ds-1 ii qemu-system-gui 1:8.2.0+ds-1 ii qemu-system-modules-opengl 1:8.2.0+ds-1 ii qemu-system-modules-spice 1:8.2.0+ds-1 ii qemu-utils 1:8.2.0+ds-1 Versions of packages qemu-system-x86 suggests: pn samba pn vde2 -- no debconf information
Bug#1059211: qemu-system-x86: QEMU/KVM guests: Window contents partially not updated
Dear Maintainer, after updating to version "1:8.2.0+ds-1" I encountered the same problem with various VM relating to linux systems with Kde/Xfce graphical desktop (e.g. Debian, Arch etc...). Thank you, Anthony
Bug#1059211: qemu-system-x86: QEMU/KVM guests: Window contents partially not updated
Control: tag -1 + moreinfo 21.12.2023 13:36, Rainer Schwarzbach : Package: qemu-system-x86 Version: 1:8.2.0+ds-1 Severity: important X-Debbugs-Cc: rz49...@gmx.net Dear Maintainer, after the latest QEMU packages update, I noticed strange redraw issues in VM guests’ X windows. Please specify which vga device both of you are using, - is it virtio-vga or something else? Thanks, /mjt
Bug#1059211: qemu-system-x86: QEMU/KVM guests: Window contents partially not updated
22.12.2023 14:23, Michael Tokarev: Please specify which vga device both of you are using, - is it virtio-vga or something else? And also please try with other kind of vga, like -vga std or -vga bochs or -vga qxl. Thanks, /mjt
Bug#1059211: qemu-system-x86: QEMU/KVM guests: Window contents partially not updated
Am 22.12.23 um 12:24 schrieb Michael Tokarev: 22.12.2023 14:23, Michael Tokarev: Please specify which vga device both of you are using, - is it virtio-vga or something else? And also please try with other kind of vga, like -vga std or -vga bochs or -vga qxl. Thanks, /mjt Hi Michael, in my case, the problems seem to occur with virtio only, regardless of whether 3D acceleration is selected or not. I tried Bochs, QXL and VGA, and everything seemed OK using each one. Kind regards Rainer
Bug#1059211: qemu-system-x86: QEMU/KVM guests: Window contents partially not updated
to reproduce the problem: qemu-system-x86_64 -machine q35,accel=kvm -cpu max -bios /usr/share/OVMF/OVMF_CODE.fd -audiodev id=alsa,drive r=alsa -device AC97,audiodev=alsa -m 8G -display gtk -full-screen -smp 16 -usb -device usb-tablet -drive file =redos,format=raw *-vga **virtio * adapters that work: - cirrus - qxl - vmware - std Il 22/12/23 12:23, Michael Tokarev ha scritto: Control: tag -1 + moreinfo 21.12.2023 13:36, Rainer Schwarzbach : Package: qemu-system-x86 Version: 1:8.2.0+ds-1 Severity: important X-Debbugs-Cc: rz49...@gmx.net Dear Maintainer, after the latest QEMU packages update, I noticed strange redraw issues in VM guests’ X windows. Please specify which vga device both of you are using, - is it virtio-vga or something else? Thanks, /mjt
Bug#1059211: qemu-system-x86: QEMU/KVM guests: Window contents partially not updated
Control: retitle -1 virtio-vga redraw is broken Control: tag -1 - moreinfo + confirmed upstream Control: forwarded -1 https://gitlab.com/qemu-project/qemu/-/issues/2051 Thank you both for the info. This is an issue I happen to hit earlier today as well, and already managed to bisect. Will see.. /mjt
