Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.16 kernel[0].
If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.16 ** Changed in: linux (Ubuntu) Importance: Undecided => Medium ** Tags added: kernel-da-key -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1763189 Title: kernel 4.15 breaks nouveau on Lenovo P50 Status in linux package in Ubuntu: Incomplete Bug description: After updating to linux 4.15.0-13-generic, the system freezes at boot, apparently when the nouveau driver tries to start. The console is still in 80x25 text mode at this point. No panic or error message is displayed, only unrelated log messages (screenshot attached). Booting in recovery mode is possible and allows X11 to start using the vesa driver. nouveau still works fine when booting an older kernel (4.13.0-36-generic) so this problem seems to be specific to 4.15.0. ProblemType: Bug ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 Date: Wed Apr 11 17:25:27 2018 Dependencies: adduser 3.113+nmu3ubuntu4 apt 1.2.26 apt-utils 1.2.26 busybox-initramfs 1:1.22.0-15ubuntu1 coreutils 8.25-2ubuntu3~16.04 cpio 2.11+dfsg-5ubuntu1 debconf 1.5.58ubuntu1 debianutils 4.7 dpkg 1.18.4ubuntu1.4 e2fslibs 1.42.13-1ubuntu1 e2fsprogs 1.42.13-1ubuntu1 gcc-5-base 5.4.0-6ubuntu1~16.04.9 gcc-6-base 6.0.1-0ubuntu1 gettext-base 0.19.7-2ubuntu3 gnupg 1.4.20-1ubuntu3.1 gpgv 1.4.20-1ubuntu3.1 grub-common 2.02~beta2-36ubuntu3.17 grub-gfxpayload-lists 0.7 grub-pc 2.02~beta2-36ubuntu3.17 grub-pc-bin 2.02~beta2-36ubuntu3.17 grub2-common 2.02~beta2-36ubuntu3.17 init-system-helpers 1.29ubuntu4 initramfs-tools 0.122ubuntu8.11 initramfs-tools-bin 0.122ubuntu8.11 initramfs-tools-core 0.122ubuntu8.11 initscripts 2.88dsf-59.3ubuntu2 insserv 1.14.0-5ubuntu3 klibc-utils 2.0.4-8ubuntu1.16.04.4 kmod 22-1ubuntu5 libacl1 2.2.52-3 libapt-inst2.0 1.2.26 libapt-pkg5.0 1.2.26 libasprintf0v5 0.19.7-2ubuntu3 libattr1 1:2.4.47-2 libaudit-common 1:2.4.5-1ubuntu2.1 libaudit1 1:2.4.5-1ubuntu2.1 libblkid1 2.27.1-6ubuntu3.4 libbz2-1.0 1.0.6-8 libc6 2.23-0ubuntu10 libcomerr2 1.42.13-1ubuntu1 libdb5.3 5.3.28-11ubuntu0.1 libdevmapper1.02.1 2:1.02.110-1ubuntu10 libfdisk1 2.27.1-6ubuntu3.4 libfreetype6 2.6.1-0.1ubuntu2.3 libfuse2 2.9.4-1ubuntu3.1 libgcc1 1:6.0.1-0ubuntu1 libgcrypt20 1.6.5-2ubuntu0.4 libgpg-error0 1.21-2ubuntu1 libgpm2 1.20.4-6.1 libklibc 2.0.4-8ubuntu1.16.04.4 libkmod2 22-1ubuntu5 liblz4-1 0.0~r131-2ubuntu2 liblzma5 5.1.1alpha+20120614-2ubuntu2 libmount1 2.27.1-6ubuntu3.4 libncurses5 6.0+20160213-1ubuntu1 libncursesw5 6.0+20160213-1ubuntu1 libpam-modules 1.1.8-3.2ubuntu2 libpam-modules-bin 1.1.8-3.2ubuntu2 libpam0g 1.1.8-3.2ubuntu2 libpcre3 2:8.38-3.1 libpng12-0 1.2.54-1ubuntu1 libprocps4 2:3.3.10-4ubuntu2.3 libreadline6 6.3-8ubuntu2 libselinux1 2.4-3build2 libsemanage-common 2.3-1build3 libsemanage1 2.3-1build3 libsepol1 2.4-2 libsmartcols1 2.27.1-6ubuntu3.4 libss2 1.42.13-1ubuntu1 libstdc++6 5.4.0-6ubuntu1~16.04.9 libsystemd0 229-4ubuntu21.2 libtinfo5 6.0+20160213-1ubuntu1 libudev1 229-4ubuntu21.2 libusb-0.1-4 2:0.1.12-28 libustr-1.0-1 1.0.4-5 libuuid1 2.27.1-6ubuntu3.4 linux-base 4.0ubuntu1 lsb-base 9.20160110ubuntu0.2 mount 2.27.1-6ubuntu3.4 multiarch-support 2.23-0ubuntu10 os-prober 1.70ubuntu3.3 passwd 1:4.2-3.1ubuntu5.3 perl-base 5.22.1-9ubuntu0.2 procps 2:3.3.10-4ubuntu2.3 psmisc 22.21-2.1build1 readline-common 6.3-8ubuntu2 sensible-utils 0.0.9ubuntu0.16.04.1 sysv-rc 2.88dsf-59.3ubuntu2 sysvinit-utils 2.88dsf-59.3ubuntu2 tar 1.28-2.1ubuntu0.1 ubuntu-keyring 2012.05.19 ucf 3.0036 udev 229-4ubuntu21.2 util-linux 2.27.1-6ubuntu3.4 uuid-runtime 2.27.1-6ubuntu3.4 zlib1g 1:1.2.8.dfsg-2ubuntu4.1 DistroRelease: Ubuntu 16.04 InstallationDate: Installed on 2017-02-01 (434 days ago) InstallationMedia: Xubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719) JournalErrors: -- Logs begin at Wed 2018-04-11 17:25:19 EDT, end at Wed 2018-04-11 17:25:22 EDT. -- Apr 11 17:25:19 hostname kernel: Intel Spectre v2 broken microcode detected; disabling Speculation Control Apr 11 17:25:19 hostname kernel: ENERGY_PERF_BIAS: Set to 'normal', was 'performance' Apr 11 17:25:19 hostname kernel: ENERGY_PERF_BIAS: View and update with x86_energy_perf_policy(8) Apr 11 17:25:19 hostname kernel: resource sanity check: requesting [mem 0xfed10000-0xfed15fff], which spans more than pnp 00:01 [mem 0xfed10000-0xfed13fff] Apr 11 17:25:19 hostname kernel: caller snb_uncore_imc_init_box+0x6b/0xb0 mapping multiple BARs Apr 11 17:25:19 hostname kernel: (NULL device *): hwmon_device_register() is deprecated. Please convert the driver to use hwmon_device_register_with_info(). Apr 11 17:25:19 hostname kernel: usb: port power management may be unreliable Apr 11 17:25:19 hostname kernel: [Firmware Bug]: ACPI(PEGP) defines _DOD but not _DOS Apr 11 17:25:19 hostname kernel: acpi PNP0C14:01: duplicate WMI GUID 05901221-D566-11D1-B2F0-00A0C9062910 (first instance was on PNP0C14:00) Apr 11 17:25:19 hostname kernel: acpi PNP0C14:02: duplicate WMI GUID 05901221-D566-11D1-B2F0-00A0C9062910 (first instance was on PNP0C14:00) Apr 11 17:25:19 hostname kernel: ata4.00: supports DRM functions and may not be fully accessible Apr 11 17:25:19 hostname kernel: ata4.00: supports DRM functions and may not be fully accessible Apr 11 17:25:19 hostname kernel: (NULL device *): hwmon_device_register() is deprecated. Please convert the driver to use hwmon_device_register_with_info(). Apr 11 17:25:19 hostname kernel: platform regulatory.0: Direct firmware load for regulatory.db failed with error -2 Apr 11 17:25:19 hostname systemd-tmpfiles[405]: [/usr/lib/tmpfiles.d/var.conf:14] Duplicate line for path "/var/log", ignoring. Apr 11 17:25:19 hostname kernel: iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8000C-34.ucode failed with error -2 Apr 11 17:25:19 hostname kernel: iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8000C-33.ucode failed with error -2 Apr 11 17:25:19 hostname kernel: iwlwifi 0000:04:00.0: Direct firmware load for iwlwifi-8000C-32.ucode failed with error -2 Apr 11 17:25:19 hostname kernel: (NULL device *): hwmon_device_register() is deprecated. Please convert the driver to use hwmon_device_register_with_info(). Apr 11 17:25:19 hostname kernel: thermal thermal_zone3: failed to read out thermal zone (-61) Package: linux-image-4.15.0-13-generic 4.15.0-13.14~16.04.1 PackageArchitecture: amd64 ProcCpuinfoMinimal: processor : 7 vendor_id : GenuineIntel cpu family : 6 model : 94 model name : Intel(R) Core(TM) i7-6820HQ CPU @ 2.70GHz stepping : 3 microcode : 0xc2 cpu MHz : 3535.950 cache size : 8192 KB physical id : 0 siblings : 8 core id : 3 cpu cores : 4 apicid : 7 initial apicid : 7 fpu : yes fpu_exception : yes cpuid level : 22 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf tsc_known_freq pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb invpcid_single pti tpr_shadow vnmi flexpriority ept vpid fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm mpx rdseed adx smap clflushopt intel_pt xsaveopt xsavec xgetbv1 xsaves dtherm ida arat pln pts hwp hwp_notify hwp_act_window hwp_epp bugs : cpu_meltdown spectre_v1 spectre_v2 bogomips : 5424.00 clflush size : 64 cache_alignment : 64 address sizes : 39 bits physical, 48 bits virtual power management: ProcEnviron: TERM=linux PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcVersionSignature: Ubuntu 4.15.0-13.14~16.04.1-generic 4.15.10 SourcePackage: linux-hwe-edge Tags: xenial Uname: Linux 4.15.0-13-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) _MarkForUpload: True To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1763189/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp