If you want the fix and still want to stick with version 18.04 then you should get it by installing 18.04.2 instead:
http://releases.ubuntu.com/18.04/ Alternatively you can install the HWE packages, but I don't have instructions prepared for how to do that reliably. -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1839174 Title: Xorg crashes in stdio functions under pci_device_vgaarb_set_target() from VGAGet() from VGAarbiterSpriteMoveCursor() Status in X.Org X server: Unknown Status in xorg-server package in Ubuntu: Fix Released Status in xorg-server-hwe-18.04 package in Ubuntu: Fix Released Status in xorg-server source package in Bionic: Won't Fix Status in xorg-server-hwe-18.04 source package in Bionic: Fix Released Status in xorg-server source package in Disco: Fix Released Status in xorg-server source package in Eoan: Fix Released Bug description: Issue xorg crashes, there doesn't seem to be any repeatable cause, it'll happen just watching hulu or youtube, it'll happen when using citrix, or when playing steam games. Steps to reproduce use xorg for a while Expected behaviour not crashing Other information issue only happens when using pci-e passthrough to qemu virtual machines Has been an issue since setting up pci-e passthrough, have reinstalled Linux Mint (from XFCE version) but error persists, have changed numerous bios settings without having an impact Upgraded bios to most recent version, also reset bios to factory defaults, didn't make a difference Tried latest Linux 5.x kernels from uuku, same issue The virtual machine doesn't have any problems, it never crashes and stays running when the host os xorg crashes. System: Host: drac Kernel: 4.15.0-55-generic x86_64 bits: 64 compiler: gcc v: 7.4.0 Desktop: Cinnamon 4.2.3 Distro: Linux Mint 19.2 Tina base: Ubuntu 18.04 bionic Machine: Type: Server System: Supermicro product: Super Server v: 0123456789 serial: <filter> Mobo: Supermicro model: X10SRL-F v: 1.01B serial: <filter> UEFI: American Megatrends v: 3.1c date: 05/02/2019 Graphics: Device-1: NVIDIA GP104 [GeForce GTX 1070] vendor: Micro-Star MSI driver: nvidia v: 430.34 bus ID: 03:00.0 Device-2: NVIDIA GK104 [GeForce GTX 770] vendor: eVga.com. driver: vfio-pci v: 0.2 bus ID: 04:00.0 Device-3: ASPEED Graphics Family vendor: Super Micro driver: ast v: kernel bus ID: 0b:00.0 Display: x11 server: X.Org 1.19.6 driver: nvidia resolution: 1920x1080~60Hz, 1920x1080~60Hz OpenGL: renderer: GeForce GTX 1070/PCIe/SSE2 v: 4.6.0 NVIDIA 430.34 direct render: Yes CPU: Topology: 6-Core model: Intel Xeon E5-1650 v4 bits: 64 type: MT MCP arch: Broadwell rev: 1 L2 cache: 15.0 MiB flags: lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 86397 Speed: 1203 MHz min/max: N/A Core speeds (MHz): 1: 1203 2: 1206 3: 1330 4: 1200 5: 1201 6: 1201 7: 1200 8: 1200 9: 2046 10: 1202 11: 1202 12: 1201 Not using PPA builds Linux Mint 19.2 (Upgraded from 19.1) 64bit root@drac:/vms# apt-cache policy xorg xorg: Installed: 1:7.7+19ubuntu7.1 Candidate: 1:7.7+19ubuntu7.1 Version table: *** 1:7.7+19ubuntu7.1 500 500 http://archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages 100 /var/lib/dpkg/status 1:7.7+19ubuntu7 500 500 http://archive.ubuntu.com/ubuntu bionic/main amd64 Packages 1070GTX - NVIDIA-Linux-x86_64-430.34.run Left screen is a 60hz monitor, right screen is a 120hz monitor Also have a 770GTX bound to vfio for virtual machine passthrough Previously used the PPA from https://launchpad.net/~graphics-drivers/+archive/ubuntu/ppa, but changed to Nvidia's .run to see if it made a different - it did not. [xsession-errors.old.upload.txt](https://github.com/linuxmint/cinnamon/files/3471789/xsession-errors.old.upload.txt) [xsession-errors.upload.txt](https://github.com/linuxmint/cinnamon/files/3471791/xsession-errors.upload.txt) [lspci.txt](https://github.com/linuxmint/cinnamon/files/3471859/lspci.txt) Syslog: [kernel.log.txt](https://github.com/linuxmint/cinnamon/files/3471804/kernel.log.txt) Grub: having mitigations on or off makes no difference GRUB_CMDLINE_LINUX_DEFAULT="intel_idle.max_cstate=1 drm.debug=14 log_buf_len=16M mitigations=on intel_iommu=on vfio-pci.ids=8086:8d26,10de:1184,10de:0e0a modprobe.blacklist=snd_hda_intel,snd_hda_core,snd_hda_codec,snd_hda_codec_hdmi,nouveau" Xorg crashdump traces: /var/crash/usr_lib_xorg_Xorg.0.crash Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `/usr/lib/xorg/Xorg -core :0 -seat seat0 -auth /var/run/lightdm/root/:0 -noliste'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f34b8f87432 in __GI__IO_default_xsputn (f=0x7f34b0427610, data=0x7f34b90b5030 <zeroes>, n=3) at genops.c:389 389 genops.c: No such file or directory. [Current thread is 1 (Thread 0x7f34b0c26700 (LWP 1320))] (gdb) thread 2 [Switching to thread 2 (Thread 0x7f34bbc10600 (LWP 1196))] #0 0x00007f34b92fb2b7 in __libc_write (fd=14, buf=0x7fffd039b2c0, nbytes=23) at ../sysdeps/unix/sysv/linux/write.c:27 27 ../sysdeps/unix/sysv/linux/write.c: No such file or directory. Thread 1 backtrace: #0 0x00007f34b8f87432 in __GI__IO_default_xsputn (f=0x7f34b0427610, data=0x7f34b90b5030 <zeroes>, n=3) at genops.c:389 #1 0x00007f34b8f7937e in __GI__IO_padn (fp=fp@entry=0x7f34b0427610, pad=pad@entry=48, count=count@entry=3) at iopadn.c:64 #2 0x00007f34b8f55f20 in _IO_vfprintf_internal (s=s@entry=0x7f34b0427610, format=format@entry=0x7f34bac5f55c "target PCI:%04x:%02x:%02x.%x", ap=ap@entry=0x7f34b0427790) at vfprintf.c:1642 #3 0x00007f34b902b169 in ___vsnprintf_chk (s=0x7f34b0427890 "target PCI:\020\200y\360.0\323\b3\330U", maxlen=<optimized out>, flags=1, slen=<optimized out>, format=0x7f34bac5f55c "target PCI:%04x:%02x:%02x.%x", args=args@entry=0x7f34b0427790) at vsnprintf_chk.c:63 #4 0x00007f34b902b095 in ___snprintf_chk (s=<optimized out>, maxlen=<optimized out>, flags=<optimized out>, slen=<optimized out>, format=<optimized out>) at snprintf_chk.c:34 #5 0x00007f34bac5d68a in pci_device_vgaarb_set_target () from /usr/lib/x86_64-linux-gnu/libpciaccess.so.0 #6 0x000055d830d0d038 in VGAGet (pScreen=0x55d8330adcd0) at ../../../../../../hw/xfree86/common/xf86VGAarbiterPriv.h:102 #7 VGAarbiterSpriteMoveCursor (pDev=0x55d8334d1360, pScreen=0x55d8330adcd0, x=1982, y=654) at ../../../../../../hw/xfree86/common/xf86VGAarbiter.c:948 #8 0x000055d830d0d04f in VGAarbiterSpriteMoveCursor (pDev=0x55d8334d1360, pScreen=0x55d8330adcd0, x=1982, y=654) at ../../../../../../hw/xfree86/common/xf86VGAarbiter.c:949 ***Last event #8 repeats*** Thread 2 backtrace: #0 0x00007f34b92fb2b7 in __libc_write (fd=14, buf=0x7fffd039b2c0, nbytes=23) at ../sysdeps/unix/sysv/linux/write.c:27 #1 0x00007f34bac5d4c0 in ?? () from /usr/lib/x86_64-linux-gnu/libpciaccess.so.0 #2 0x00007f34bac5d69f in pci_device_vgaarb_set_target () from /usr/lib/x86_64-linux-gnu/libpciaccess.so.0 #3 0x000055d830d0d038 in VGAGet (pScreen=0x55d8330adcd0) at ../../../../../../hw/xfree86/common/xf86VGAarbiterPriv.h:102 #4 VGAarbiterSpriteMoveCursor (pDev=0x55d8334d1360, pScreen=0x55d8330adcd0, x=1990, y=664) at ../../../../../../hw/xfree86/common/xf86VGAarbiter.c:948 #5 0x000055d830d0d04f in VGAarbiterSpriteMoveCursor (pDev=0x55d8334d1360, pScreen=0x55d8330adcd0, x=1990, y=664) at ../../../../../../hw/xfree86/common/xf86VGAarbiter.c:949 ***Last event #5 repeats*** To manage notifications about this bug go to: https://bugs.launchpad.net/xorg-server/+bug/1839174/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp