Public bug reported: Video of bug: https://youtu.be/O0__VNN9G_o
At 0:11 in the video you see old web browser data showing up in my program. At 0:19 when I close a window in my program the texture for my piano key letters flicker. By luck the texture for my keys sometimes flickers to stuff previously displayed on my desktop. This flickering is linked to my mouse movement/placement. When I run my program with the proprietary 440 NVIDIA driver things work fine. I am on Ubuntu budgie 20.04 using XFCE on X.org X11. The SDL2 program source: https://github.com/kevinacahalan/piano_waterfall git hash 553bb6c8ca18b23494a6c92f4551baa1649f0374 ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: xorg 1:7.7+19ubuntu14 ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44 Uname: Linux 5.4.0-42-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.6 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CasperMD5CheckResult: skip CompositorRunning: None CurrentDesktop: XFCE Date: Fri Aug 7 23:35:05 2020 DistUpgraded: Fresh install DistroCodename: focal DistroVariant: ubuntu DkmsStatus: v4l2loopback, 0.12.3, 5.4.0-40-generic, x86_64: installed v4l2loopback, 0.12.3, 5.4.0-42-generic, x86_64: installed virtualbox, 6.1.10, 5.4.0-40-generic, x86_64: installed virtualbox, 6.1.10, 5.4.0-42-generic, x86_64: installed ExtraDebuggingInterest: Yes GraphicsCard: NVIDIA Corporation GP107 [GeForce GTX 1050 Ti] [10de:1c82] (rev a1) (prog-if 00 [VGA controller]) Subsystem: eVga.com. Corp. GP107 [GeForce GTX 1050 Ti] [3842:6251] InstallationDate: Installed on 2020-05-05 (95 days ago) InstallationMedia: Ubuntu-Budgie 20.04 LTS "Focal Fossa" - Release amd64 (20200423) MachineType: Dell Inc. OptiPlex 3010 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-42-generic root=UUID=5fe179e5-be36-426b-9297-8ef7a1af2c0c ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 01/31/2013 dmi.bios.vendor: Dell Inc. dmi.bios.version: A09 dmi.board.name: 042P49 dmi.board.vendor: Dell Inc. dmi.board.version: A01 dmi.chassis.type: 6 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvrA09:bd01/31/2013:svnDellInc.:pnOptiPlex3010:pvr01:rvnDellInc.:rn042P49:rvrA01:cvnDellInc.:ct6:cvr: dmi.product.name: OptiPlex 3010 dmi.product.version: 01 dmi.sys.vendor: Dell Inc. version.compiz: compiz N/A version.libdrm2: libdrm2 2.4.101-2 version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.8-0ubuntu1~20.04.1 version.libgl1-mesa-glx: libgl1-mesa-glx N/A version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2.2 version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1 version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20200226-1 version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1 xserver.bootTime: Fri Aug 7 21:38:07 2020 xserver.configfile: default xserver.errors: client bug: timer event11 debounce short: scheduled expiry is in the past (-2ms), your system is too slow xserver.logfile: /var/log/Xorg.0.log xserver.version: 2:1.20.8-2ubuntu2.2 xserver.video_driver: modeset ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug focal ubuntu ** Attachment added: "dmesg" https://bugs.launchpad.net/bugs/1890865/+attachment/5399711/+files/kernel_log.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1890865 Title: Nouveau X.org: Stale texture data and flicker in small SDL2 program To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1890865/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
