There are one or two issues here. The second one at least shows a problem in the Nvidia kernel driver:
[ 11.094895] NVRM: Your system is not currently configured to drive a VGA console [ 11.094899] NVRM: on the primary VGA device. The NVIDIA Linux graphics driver [ 11.094900] NVRM: requires the use of a text-mode VGA console. Use of other console [ 11.094901] NVRM: drivers including, but not limited to, vesafb, may result in [ 11.094902] NVRM: corruption and stability problems, and is not supported. [ 11.132280] ------------[ cut here ]------------ [ 11.132285] Bad or missing usercopy whitelist? Kernel memory exposure attempt detected from SLUB object 'nvidia_stack_t' (offset 11864, size 3)! [ 11.132303] WARNING: CPU: 0 PID: 704 at mm/usercopy.c:83 usercopy_warn+0x81/0xa0 [ 11.132304] Modules linked in: nvidia_uvm(POE) dell_laptop dell_smbios dell_wmi_descriptor coretemp wmi dcdbas dell_smm_hwmon kvm_intel kvm irqbypass arc4 uvcvideo iwldvm videobuf2_vmalloc videobuf2_memops mac80211 videobuf2_v4l2 videobuf2_common joydev videodev input_leds media iwlwifi snd_hda_codec_idt snd_hda_codec_generic ledtrig_audio cfg80211 snd_hda_intel snd_hda_codec snd_hda_core snd_hwdep snd_pcm snd_seq_midi snd_seq_midi_event snd_rawmidi snd_seq nvidia(POE) snd_seq_device snd_timer snd drm mac_hid serio_raw soundcore sch_fq_codel parport_pc ppdev lp parport ip_tables x_tables autofs4 hid_generic usbhid hid i2c_i801 psmouse ahci libahci lpc_ich r8169 realtek video [ 11.132342] CPU: 0 PID: 704 Comm: Xorg Tainted: P OE 5.0.0-11-generic #12-Ubuntu [ 11.132343] Hardware name: Dell Inc. Vostro 1720/0P369J, BIOS A05 10/27/2009 [ 11.132345] RIP: 0010:usercopy_warn+0x81/0xa0 [ 11.132347] Code: 0f a8 41 51 4d 89 d8 48 c7 c0 98 a1 0e a8 49 89 f1 48 89 f9 48 0f 45 c2 48 c7 c7 28 c2 0f a8 4c 89 d2 48 89 c6 e8 11 03 df ff <0f> 0b 48 83 c4 18 c9 c3 48 c7 c6 e2 ae 11 a8 49 89 f1 49 89 f3 eb [ 11.132349] RSP: 0018:ffffa3ff8191bb58 EFLAGS: 00010282 [ 11.132350] RAX: 0000000000000000 RBX: ffff902ff2a82e58 RCX: 0000000000000006 [ 11.132352] RDX: 0000000000000007 RSI: 0000000000000092 RDI: ffff902ffba16440 [ 11.132353] RBP: ffffa3ff8191bb70 R08: 0000000000000001 R09: 000000000000036c [ 11.132354] R10: 0000000000000004 R11: 0000000000000000 R12: 0000000000000003 [ 11.132355] R13: 0000000000000001 R14: ffff902ff2a82e5b R15: ffff902ff2a82ea0 [ 11.132357] FS: 00007fc7286eca80(0000) GS:ffff902ffba00000(0000) knlGS:0000000000000000 [ 11.132359] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 11.132360] CR2: 00007fc723cce160 CR3: 000000013346a000 CR4: 00000000000406f0 [ 11.132361] Call Trace: [ 11.132369] __check_heap_object+0xc2/0x110 [ 11.132371] __check_object_size+0x166/0x192 [ 11.132565] os_memcpy_to_user+0x26/0x50 [nvidia] [ 11.132675] _nv001372rm+0xa5/0x260 [nvidia] ** Tags added: nvidia ** Package changed: xorg (Ubuntu) => nvidia-graphics-drivers-340 (Ubuntu) -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg in Ubuntu. https://bugs.launchpad.net/bugs/1824670 Title: Boot to black screen after Kubuntu 19.04 install To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/nvidia-graphics-drivers-340/+bug/1824670/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp
