disable iommu or enable iommu by add "iommu=soft intel_iommu=off " or "iommu=on intel_iommu=on" take the same result.But disable intel_iommu it seems the graphical desktop response very smoothly.
-- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to mesa in Ubuntu. https://bugs.launchpad.net/bugs/1858199 Title: bugs in libvdpau_radeonsi.so and amdgpu(or radeon) driver freeze the system Status in mesa package in Ubuntu: New Bug description: 1. In 4.15 kernel serires ,vlc or mpv video player with hardware acceleration output will freeze the system in minutes ,the desktop screen display content was frozen ,but sometime the audio will continue to play for about 10 seconds to one miniute,then the system dead。I have to reset the machine to reboot. When upgrade to 5.3.24 kernel,amdgpu still hanged immediately,but play video through vdpau in radeon driver the system will no hang immediately,the freqency of hanging is about serveral times a day。 some times web browser in virtualbox guest randomly hangs the system。 2. installing amdgpu-pro driver download from amd official site (version of 18.40-697810,18.50-756341,19.10-785425,19.30-934563) are all the same problem with above. 3. remove libvdpau_radeonsi.so.1.0.0 in the system from ubuntu or installed in /opt/amdgpu by amdgpu-pro driver solved the problem . the system has never been freezing for several weeks ,but the problem happened again when I restore the libvdpau_radeonsi.so file。 4.When use amdgpu driver the vlc output sound via display output port (through an active hdmi adaptor to hdmi monitor) was glitches ,the sound seem missing or dropped in every 2~3 seconds，but when use radeon driver the sound was normal.the audio problem is the same with 4.15 kernel when using kernel 5.3.24. But mplayer sound is always good ,testing with audio output of pulseaduio and alsa ,the kernel driver only affected the sound of vlc (tested with all available audio output ),the other applications was normal. 5. Test with the ubuntu 19.10 live image desktop is the same problem。 6. My system have four monitors,graphics card is R7 360 ,recognized as (from lspci) : 6.02:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Cape Verde PRO [Radeon HD 7750/8740 / R7 250E]. infomation from uname -a : Linux smzhou-desktop 5.3.0-24-lowlatency #26~18.04.2-Ubuntu SMP PREEMPT Tue Nov 26 14:39:35 UTC 2019 x86_64 x86_64 x86_64 GNU/Linux To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/mesa/+bug/1858199/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
