** Description changed: The screen becomes black blank between BIOS screen and the login page. The black screen never goes away. This is random not after install, update or upgrade. Also after PC reboot it works fine, it is not persistent problem, once PC is loaded it works. Ubuntu 16.04 LTS, Linux pm03 4.4.0-22-generic #39-Ubuntu SMP Thu May 5 16:53:32 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux lshw -C video *-display description: VGA compatible controller product: Sky Lake Integrated Graphics vendor: Intel Corporation physical id: 2 bus info: pci@0000:00:02.0 version: 06 width: 64 bits clock: 33MHz capabilities: pciexpress msi pm vga_controller bus_master cap_list rom configuration: driver=i915_bpo latency=0 resources: irq:155 memory:de000000-deffffff memory:c0000000-cfffffff ioport:f000(size=64) ----- sample from journalctl.txt in attachement May 26 10:03:59 pm03 kernel: BUG: unable to handle kernel paging request at 0000000000017860 May 26 10:03:59 pm03 kernel: IP: [<ffffffff810ca83e>] native_queued_spin_lock_slowpath+0xfe/0x170 May 26 10:03:59 pm03 kernel: PGD 0 May 26 10:03:59 pm03 kernel: Oops: 0002 [#1] SMP May 26 10:03:59 pm03 kernel: Modules linked in: intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel snd_hda_intel kvm snd_hda_codec snd_hda_core snd_hwdep snd_pcm irqbypass snd_seq_midi crct10dif_pclmul snd_seq_midi_event crc32_pclmul snd_rawmidi aesni_intel aes_x86_64 lrw gf128mul glue_helper snd_seq ablk_helper cryptd snd_seq_device snd_timer snd serio_raw soundcore input_leds joydev btusb btrtl shpchp mei_me mei hci_uart btbcm btqca btintel bluetooth 8250_fintek mac_hid intel_lpss_acpi intel_lpss acpi_als kfifo_buf acpi_pad industrialio ipt_REJECT nf_reject_ipv4 xt_comment nf_log_ipv4 nf_log_common xt_LOG xt_multiport xt_limit xt_tcpudp xt_addrtype nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack ip6table_filter ip6_tables nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat nf_conntrack_ftp May 26 10:03:59 pm03 kernel: nf_conntrack iptable_filter ip_tables parport_pc x_tables ppdev lp parport autofs4 btrfs xor raid6_pq hid_generic usbhid mxm_wmi i915_bpo intel_ips i2c_algo_bit e1000e drm_kms_helper syscopyarea sysfillrect ptp psmouse sysimgblt fb_sys_fops pps_core nvme drm ahci libahci wmi pinctrl_sunrisepoint video pinctrl_intel i2c_hid hid fjes May 26 10:03:59 pm03 kernel: CPU: 3 PID: 576 Comm: systemd-udevd Not tainted 4.4.0-22-generic #39-Ubuntu May 26 10:03:59 pm03 kernel: Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./Z170 Extreme6+, BIOS P2.50 03/30/2016 May 26 10:03:59 pm03 kernel: task: ffff8804620f0ec0 ti: ffff88045faf4000 task.ti: ffff88045faf4000 - May 26 10:03:59 pm03 kernel: RIP: 0010:[<ffffffff810ca83e>] [<ffffffff810ca83e>] native_queued_spin_lock_slowpath+0xfe/0x170 - May 26 10:03:59 pm03 kernel: RSP: 0018:ffff88045faf7be8 EFLAGS: 00010206 - May 26 10:03:59 pm03 kernel: RAX: 00000000000018ca RBX: ffff88045c5a4520 RCX: 0000000000017860 - May 26 10:03:59 pm03 kernel: RDX: ffff880475cd7840 RSI: 0000000000100000 RDI: ffff88045c5a4520 - May 26 10:03:59 pm03 kernel: RBP: ffff88045faf7be8 R08: 0000000000000101 R09: 0000000000000000 - May 26 10:03:59 pm03 kernel: R10: 0000000000000000 R11: ffff88045c9c5300 R12: ffff88045c5a4698 - May 26 10:03:59 pm03 kernel: R13: ffff88045c5a4520 R14: ffff88045c5a4578 R15: 0000000000000000 - May 26 10:03:59 pm03 kernel: FS: 00007f05fc7838c0(0000) GS:ffff880475cc0000(0000) knlGS:0000000000000000 - May 26 10:03:59 pm03 kernel: CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 - May 26 10:03:59 pm03 kernel: CR2: 0000000000017860 CR3: 000000045fae5000 CR4: 00000000003406e0 - May 26 10:03:59 pm03 kernel: DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 - May 26 10:03:59 pm03 kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 - May 26 10:03:59 pm03 kernel: Stack: - May 26 10:03:59 pm03 kernel: ffff88045faf7bf8 ffffffff81825061 ffff88045faf7d80 ffffffff811a9cc6 - May 26 10:03:59 pm03 kernel: ffff88045c5a4578 000000003580e4a0 0000000000000000 ffff88045faf7ce0 - May 26 10:03:59 pm03 kernel: ffffffffffffffff 0000000000000000 ffff88045faf7c60 ffff88045faf7cd0 - May 26 10:03:59 pm03 kernel: Call Trace: - May 26 10:03:59 pm03 kernel: [<ffffffff81825061>] _raw_spin_lock+0x21/0x30 - May 26 10:03:59 pm03 kernel: [<ffffffff811a9cc6>] shmem_undo_range+0x396/0x790 - May 26 10:03:59 pm03 kernel: [<ffffffff81217008>] ? __inode_permission+0x48/0xb0 - May 26 10:03:59 pm03 kernel: [<ffffffff812176e1>] ? unlazy_walk+0xc1/0x150 - May 26 10:03:59 pm03 kernel: [<ffffffff81216dc4>] ? terminate_walk+0x64/0xd0 - May 26 10:03:59 pm03 kernel: [<ffffffff81236012>] ? __inode_wait_for_writeback+0x72/0xe0 - May 26 10:03:59 pm03 kernel: [<ffffffff811aa0d4>] shmem_truncate_range+0x14/0x40 - May 26 10:03:59 pm03 kernel: [<ffffffff811aa1e2>] shmem_evict_inode+0xe2/0x170 - May 26 10:03:59 pm03 kernel: [<ffffffff81227ede>] evict+0xbe/0x190 - May 26 10:03:59 pm03 kernel: [<ffffffff812281c1>] iput+0x1c1/0x240 - May 26 10:03:59 pm03 kernel: [<ffffffff8122393d>] __dentry_kill+0x18d/0x1e0 - May 26 10:03:59 pm03 kernel: [<ffffffff81223abb>] dput+0x12b/0x220 - May 26 10:03:59 pm03 kernel: [<ffffffff8121ebb4>] SyS_rename+0x2f4/0x3c0 - May 26 10:03:59 pm03 kernel: [<ffffffff818252f2>] entry_SYSCALL_64_fastpath+0x16/0x71 - May 26 10:03:59 pm03 kernel: Code: 87 47 02 c1 e0 10 85 c0 74 38 48 89 c1 c1 e8 12 48 c1 e9 0c 83 e8 01 83 e1 30 48 98 48 81 c1 40 78 01 00 48 03 0c c5 80 42 f3 81 <48> 89 11 8b 42 08 85 c0 75 0d f3 90 8b 42 08 85 c0 74 f7 eb 02 - May 26 10:03:59 pm03 kernel: RIP [<ffffffff810ca83e>] native_queued_spin_lock_slowpath+0xfe/0x170 - May 26 10:03:59 pm03 kernel: RSP <ffff88045faf7be8> - May 26 10:03:59 pm03 kernel: CR2: 0000000000017860 - May 26 10:03:59 pm03 kernel: ---[ end trace 7fd5cc46d480e3f0 ]--- + ....
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