Did this issue start happening after an update/upgrade? Was there a prior kernel version where you were not having this particular problem?
Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.19-rc7 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/v4.19-rc7/ ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- 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/1796726 Title: Ubuntu 18.10 regression: nvidia driver does not work Status in linux package in Ubuntu: Incomplete Bug description: Problems started after upgrade to 18.10 and first reboot. Symptoms: * Login screen appears * After providing credentials desktop does not start Part of dmesg: ------------------------------------------------- ... [ 10.482929] resource sanity check: requesting [mem 0x000c0000-0x000fffff], which spans more than PCI Bus 0000:00 [mem 0x000c0000-0x000dffff window] [ 10.483149] caller os_map_kernel_space.part.9+0xd4/0x120 [nvidia] mapping multiple BARs [ 10.801510] ------------[ cut here ]------------ [ 10.801512] Bad or missing usercopy whitelist? Kernel memory exposure attempt detected from SLUB object 'nvidia_stack_cache' (offset 11440, size 3)! [ 10.801522] WARNING: CPU: 3 PID: 1188 at mm/usercopy.c:81 usercopy_warn+0x81/0xa0 [ 10.801523] Modules linked in: snd_hda_codec_hdmi binfmt_misc nvidia_uvm(POE) nls_iso8859_1 wmi_bmof mxm_wmi intel_rapl x86_pkg_temp_thermal intel_powerclamp kvm_intel kvm irqbypass crct10dif_pclmul crc32_pclmul ghash_clmulni_intel pcbc nvidia_drm(POE) aesni_intel nvidia_modeset(POE) aes_x86_64 crypto_simd cryptd glue_helper nvidia(POE) intel_cstate snd_hda_codec_realtek snd_hda_codec_generic snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm arc4 snd_seq_midi snd_seq_midi_event snd_rawmidi intel_rapl_perf ath9k snd_seq ath9k_common ath9k_hw drm_kms_helper joydev ath snd_seq_device input_leds snd_timer mac80211 drm snd cfg80211 ipmi_devintf ir_rc6_decoder ipmi_msghandler fb_sys_fops syscopyarea soundcore mei_me sysfillrect sysimgblt mei rc_rc6_mce video nuvoton_cir mac_hid rc_core wmi sch_fq_codel [ 10.801559] nct6775 hwmon_vid coretemp parport_pc sunrpc ppdev lp parport ip_tables x_tables autofs4 hid_logitech_hidpp hid_logitech_dj hid_generic usbhid hid gpio_ich ahci r8169 libahci lpc_ich mii [ 10.801572] CPU: 3 PID: 1188 Comm: Xorg Tainted: P OE 4.18.0-8-generic #9-Ubuntu ... ------------------------------------------------- Extra info for Bug 1796433 ProblemType: Bug DistroRelease: Ubuntu 18.10 Package: linux-image-4.18.0-8-generic 4.18.0-8.9 ProcVersionSignature: Ubuntu 4.18.0-8.9-generic 4.18.7 Uname: Linux 4.18.0-8-generic x86_64 ApportVersion: 2.20.10-0ubuntu11 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: alexei 2824 F.... pulseaudio /dev/snd/controlC0: alexei 2824 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Mon Oct 8 19:47:11 2018 HibernationDevice: RESUME=UUID=45af239b-c597-45a1-bb72-3ba25b5ee546 InstallationDate: Installed on 2016-01-06 (1005 days ago) InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021) MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M. ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-8-generic root=UUID=d4f27b9e-0cff-49e1-8392-a41aa520bd85 ro noprompt persistent quiet splash vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-4.18.0-8-generic N/A linux-backports-modules-4.18.0-8-generic N/A linux-firmware 1.175 RfKill: 0: phy0: Wireless LAN Soft blocked: yes Hard blocked: no SourcePackage: linux UpgradeStatus: Upgraded to cosmic on 2018-10-05 (2 days ago) dmi.bios.date: 09/16/2011 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P1.10 dmi.board.name: HM65-MXM dmi.board.vendor: ASRock dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.10:bd09/16/2011:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnHM65-MXM:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.family: To Be Filled By O.E.M. dmi.product.name: To Be Filled By O.E.M. dmi.product.sku: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1796726/+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
