18.04 daily build "hang"

[David L]

On Tue, Feb 13, 2018 at 11:45 PM, David L <david4lists at gmail.com> wrote:

>
>
> On Tue, Feb 13, 2018 at 11:09 PM, Liam Proven <lproven at gmail.com> wrote:
>
>> On 14 February 2018 at 03:39, David L <david4lists at gmail.com> wrote:
>>
>> > So the answer is that ctrl-alt-F[1234567] don't work when it gets into
>> that
>> > state and neither does the caps lock light change when I press the
>> button.
>> > Furthermore, after an upgrade, it gets into an even less responsive
>> state
>> > where the mouse doesn't respond.
>> >
>> > Additionally, after I installed kubuntu-desktop and logged in under
>> plasma
>> > with Wayland and then rebooted and tried to log into a standard Ubuntu
>> > session, I got this error window on a black screen:
>> >
>> > "unsupported number of arguments (4); falling back to default session"
>> >
>> > Another problem I saw was that one of my monitors is in portrait mode
>> and
>> > when I move the mouse across the right boundary, I see two mouse
>> pointers
>> > for a while... one where it should be in the window the to right and one
>> > where it would be if it was in landscape mode.
>>
>>
>> Does it freeze before or after login?
>>
> It hangs after login.
>
>
>> Try booting with the ``nomodeswitch'' kernel parameter.
>>
>> Ok, I'll try that next time. For some reason I haven't been able to stop
> grub before booting, but I'll try again.
>
>
>> You can also try the nVidia drivers if you can get to a console -- no
>> harm if it's already broken.
>>
>> I tried to install the nVidia drivers, but nvidia-settings gave me some
> error about not finding any displays.
>
>
I recently installed the 18.04 beta release, updated/upgraded and was still
seeing the hangs. But this time I was able to install nvidia drivers and I
stopped seeing the hangs with the nvidia drivers installed.

One time when it partially hung with the nouveau driver, I could move the
mouse, but no other sign of life...even the keyboard caps lock button was
not changing the caps lock light, I was still able to ssh into it.

So I assume this is a nouveau driver bug with my video card:
04:00.0 VGA compatible controller: NVIDIA Corporation GK106 [GeForce GTX
660] (rev a1)
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