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 v4.3 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/v4.3-unstable/ ** Changed in: linux (Ubuntu) Importance: Undecided => Medium -- 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/1513500 Title: In Ubuntu 15.10, the vmlinuz-4.2.0-17-generic will not take password on splash screen Status in linux package in Ubuntu: Incomplete Bug description: I version-upgraded Ubuntu 15.04 in place to Ubuntu 15.10 on an HP workstation with a Intel Core i7 and 16GB RAM. The HDD was previously in a different computer, and I have seen issues with the settings from the old machine fighting with the settings for current OS version. The behaviour is as follows: When I log in with the 4.2.x kernel, the machine changes to a blank screen pauses for a moment and returns me to the login splash screen. I can log in normally if I use the 3.19.0-32-generic kernel. I can also change to TTY1 and log in at the command line with the 4.2.x kernel. description: Computer width: 64 bits capabilities: smbios-2.5 vsyscall32 *-core description: Motherboard physical id: 0 *-memory description: System memory physical id: 0 size: 15GiB *-cpu product: Intel(R) Core(TM) i7 CPU 950 @ 3.07GHz vendor: Intel Corp. physical id: 1 bus info: cpu@0 size: 2133MHz capacity: 3068MHz width: 64 bits capabilities: fpu fpu_exception wp 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 rdtscp x86-64 constant_tsc arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr pdcm sse4_1 sse4_2 popcnt lahf_lm ida dtherm tpr_shadow vnmi flexpriority ept vpid cpufreq To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1513500/+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