And I just remembered that I have some logs from the newer failure that might help. I will post short excerpts here as otherwise there is nothing to distinguish them from the logs of the older failure.
>From kern.log: Nov 29 11:36:53 hydra kernel: [ 35.815890] bbswitch: version 0.7 Nov 29 11:36:53 hydra kernel: [ 35.815898] bbswitch: Found integrated VGA device 0000:00:02.0: \_SB_.PCI0.GFX0 Nov 29 11:36:53 hydra kernel: [ 35.815904] bbswitch: Found discrete VGA device 0000:01:00.0: \_SB_.PCI0.P0P2.PEGP Nov 29 11:36:53 hydra kernel: [ 35.815918] ACPI Warning: \_SB_.PCI0.P0P2.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20131115/nsarguments-95) Nov 29 11:36:53 hydra kernel: [ 35.815983] bbswitch: detected an Optimus _DSM function Nov 29 11:36:53 hydra kernel: [ 35.815993] bbswitch: Succesfully loaded. Discrete card 0000:01:00.0 is on Nov 29 11:37:04 hydra kernel: [ 46.064217] type=1400 audit(1448825824.113:73): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/lib/cups/backend/cups-pdf" pid=2217 comm="apparmor_parser" Nov 29 11:37:04 hydra kernel: [ 46.064225] type=1400 audit(1448825824.113:74): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=2217 comm="apparmor_parser" Nov 29 11:37:04 hydra kernel: [ 46.064640] type=1400 audit(1448825824.113:75): apparmor="STATUS" operation="profile_replace" profile="unconfined" name="/usr/sbin/cupsd" pid=2217 comm="apparmor_parser" Nov 29 11:37:04 hydra kernel: [ 46.549245] nvidia 0000:01:00.0: irq 46 for MSI/MSI-X Nov 29 11:37:04 hydra kernel: [ 46.552471] ACPI Warning: \_SB_.PCI0.P0P2.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20131115/nsarguments-95) Nov 29 11:37:04 hydra kernel: [ 46.552514] ACPI Warning: \_SB_.PCI0.P0P2.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20131115/nsarguments-95) Nov 29 11:37:04 hydra kernel: [ 46.552531] ACPI Warning: \_SB_.PCI0.P0P2.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20131115/nsarguments-95) Nov 29 11:37:04 hydra kernel: [ 46.552558] ACPI Warning: \_SB_.PCI0.P0P2.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20131115/nsarguments-95) Nov 29 11:37:04 hydra kernel: [ 46.552575] ACPI Warning: \_SB_.PCI0.P0P2.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20131115/nsarguments-95) Nov 29 11:37:04 hydra kernel: [ 46.552590] ACPI Warning: \_SB_.PCI0.P0P2.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20131115/nsarguments-95) Nov 29 11:37:04 hydra kernel: [ 46.552628] ACPI Warning: \_SB_.PCI0.P0P2.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20131115/nsarguments-95) Nov 29 11:37:04 hydra kernel: [ 46.552645] ACPI Warning: \_SB_.PCI0.P0P2.PEGP._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20131115/nsarguments-95) Nov 29 11:37:09 hydra kernel: [ 51.216680] NVRM: failed to copy vbios to system memory. Nov 29 11:37:09 hydra kernel: [ 51.217022] NVRM: RmInitAdapter failed! (0x30:0xffff:851) Nov 29 11:37:09 hydra kernel: [ 51.217028] NVRM: rm_init_adapter failed for device bearing minor number 0 Nov 29 11:37:09 hydra kernel: [ 51.217053] NVRM: nvidia_frontend_open: minor 0, module->open() failed, error -5 Actually the other one says nothing useful. So I won't pollute the page with its unreadability. It is just a record of the fact that I changed the settings around some as I tried to get something to work. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1482711 Title: X displays nothing instead of login screen To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1482711/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
