@kai I tested by switching from UEFI to Legacy mode. There is no problem at all. No need to switch to noacpi mode while installation. After booting everything got worked. lspci listing properly.
So here issue with UEFI mode with Ubuntu 16.04.4 version on Dell 5820 Tower. Is there any known bug discussion is ongoing for this issue? Do you need any info from my side? Any command output or any log file? if yes please let me know.. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1818816 Title: Ubuntu 16.04 LTS + "lspci: Cannot open /sys/bus No such file" on Dell 5820 Tower To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1818816/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
