Public bug reported:
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
...
-------------------------------------------------
ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: nvidia-driver-390 (not installed)
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
CurrentDesktop: ubuntu:GNOME
Date: Sat Oct 6 02:03:52 2018
InstallationDate: Installed on 2016-01-06 (1003 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
SourcePackage: nvidia-graphics-drivers-390
UpgradeStatus: Upgraded to cosmic on 2018-10-05 (0 days ago)
** Affects: nvidia-graphics-drivers-390 (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug cosmic
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https://bugs.launchpad.net/bugs/1796433
Title:
Ubuntu 18.10 regression: nvidia driver does not work
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