Public bug reported: Hi, I think I've found a memory leek in X.org. The memory usage goes up and up (I was at ~3.4GB when I decided to open this bug report), and barely goes down when I close X clients (closing half of the windows brought me down to 3.3GB).
https://paste.gnugen.ch/raw/oUhi I'm using Ubuntu 20.04 LTS and I am kinda stuck with X.org for Wacom tablet support. This is quite annoying and made the system hang twice. (The system ran out of memory, which caused 100% CPU usage while Linux was trying not to kill anything, and a force reboot was required). I had to add more swap, because 8GB + the default 2GB of swap weren't enough. >From the debugging X wiki page http://wiki.ubuntu.com/X/Reporting (last edited >in 2012) : ``` $ sudo cat /sys/kernel/debug/dri/0/i915_gem_objects 412 shrinkable [0 free] objects, 140279808 bytes systemd-logind: 221 objects, 113086464 bytes (0 active, 0 inactive, 33603584 unbound, 0 closed) Xorg: 221 objects, 113086464 bytes (0 active, 52482048 inactive, 33603584 unbound, 0 closed) Xorg: 221 objects, 113086464 bytes (0 active, 0 inactive, 33603584 unbound, 0 closed) Xorg: 857 objects, 274239488 bytes (0 active, 0 inactive, 146616320 unbound, 0 closed) gnome-shell: 857 objects, 274239488 bytes (0 active, 127623168 inactive, 146616320 unbound, 0 closed) gnome-shell: 857 objects, 274239488 bytes (0 active, 0 inactive, 146616320 unbound, 0 closed) Xorg: 1 objects, 4096 bytes (0 active, 0 inactive, 4096 unbound, 0 closed) ``` After conversion, all bytes values are between 100 and 260MiB, which is large but not *that* large. I know the basics of how to use GDB, but don't know how to find what's using the memory. I am willing to compile and test a patched package someone suggests a patch. ProblemType: Bug DistroRelease: Ubuntu 20.04 Package: xorg 1:7.7+19ubuntu14 ProcVersionSignature: Ubuntu 5.4.0-56.62-generic 5.4.73 Uname: Linux 5.4.0-56-generic x86_64 ApportVersion: 2.20.11-0ubuntu27.13 Architecture: amd64 BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log' CasperMD5CheckResult: skip CompositorRunning: None CurrentDesktop: ubuntu:GNOME Date: Sat Dec 5 05:51:04 2020 DistUpgraded: Fresh install DistroCodename: focal DistroVariant: ubuntu ExtraDebuggingInterest: Yes GraphicsCard: Intel Corporation HD Graphics 5500 [8086:1616] (rev 09) (prog-if 00 [VGA controller]) Subsystem: Lenovo HD Graphics 5500 [17aa:2226] InstallationDate: Installed on 2020-11-05 (29 days ago) InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20200731) Lsusb: Bus 001 Device 002: ID 8087:8001 Intel Corp. Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 002 Device 003: ID 5986:0366 Acer, Inc Integrated Camera Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: LENOVO 20CLS28G02 ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-56-generic root=UUID=356b9ac9-6bdb-4fd6-83a5-5fcec346ace9 ro quiet splash vt.handoff=7 SourcePackage: xorg UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 12/08/2015 dmi.bios.vendor: LENOVO dmi.bios.version: N10ET40W (1.19 ) dmi.board.asset.tag: Not Available dmi.board.name: 20CLS28G02 dmi.board.vendor: LENOVO dmi.board.version: SDK0E50510 WIN dmi.chassis.asset.tag: 479364 dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN10ET40W(1.19):bd12/08/2015:svnLENOVO:pn20CLS28G02:pvrThinkPadX250:rvnLENOVO:rn20CLS28G02:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad X250 dmi.product.name: 20CLS28G02 dmi.product.sku: LENOVO_MT_20CL_BU_Think_FM_ThinkPad X250 dmi.product.version: ThinkPad X250 dmi.sys.vendor: LENOVO 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 2:1.20.8-2ubuntu2.6 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 ** Affects: xorg (Ubuntu) Importance: Undecided Status: New ** Tags: amd64 apport-bug focal ubuntu -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1906906 Title: Memory leak in X.org To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1906906/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
