black screen after boot

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Bob
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black screen after boot

Bob
I upgraded from 17.04 to 17.10 in a test partition on my laptop a Lenovo T60.
When the upgrade was done I rebooted.  The system ran for a while with only a
black screen.  Since nothing was happening I entered my password, nothing
happened, I pressed some keys, nothing happened, at this point I assumed the
upgrade had failed so I pressed the power button.  Pressing the power button
caused the moon symbol on the laptop to light, this was a surprise so after the
disk activity light stopped blinking I pressed the power button again.  This
caused the login screen to display.  I did login and it appears that the system
functions properly.

Now any time I boot that system it comes up with a black screen and I have to
press the power to put the system to sleep and then press the power button
again to wake it up and display the login screen.

Since I have not seen any messages about anyone having the problem I assume I
am the only one with this problem.

Anyone have an idea on how to fix this?

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Re: black screen after boot

Liam Proven
On 4 November 2017 at 05:01, Bob <[hidden email]> wrote:

> I upgraded from 17.04 to 17.10 in a test partition on my laptop a Lenovo T60.
> When the upgrade was done I rebooted.  The system ran for a while with only a
> black screen.  Since nothing was happening I entered my password, nothing
> happened, I pressed some keys, nothing happened, at this point I assumed the
> upgrade had failed so I pressed the power button.  Pressing the power button
> caused the moon symbol on the laptop to light, this was a surprise so after the
> disk activity light stopped blinking I pressed the power button again.  This
> caused the login screen to display.  I did login and it appears that the system
> functions properly.
>
> Now any time I boot that system it comes up with a black screen and I have to
> press the power to put the system to sleep and then press the power button
> again to wake it up and display the login screen.
>
> Since I have not seen any messages about anyone having the problem I assume I
> am the only one with this problem.
>
> Anyone have an idea on how to fix this?

https://www.cnet.com/products/lenovo-thinkpad-t60/specs/

ATI graphics.

What desktop? If was Unity, it's now GNOME. GNOME defaults to Wayland.
Wayland won't work with ATI proprietary display drivers, but I have a
machine of that age with an ATI Mobility Radeon GPU and it works well
enough.

My GPU is no longer supported by fglrx so I didn't have them, but it's
a different one to yours and I don't know if yours are. Remove any
trace of them if so.

Also try adding the "nomodeset" line to your kernel parameters in GRUB.

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Re: black screen after boot

Colin Law
On 4 November 2017 at 13:04, Liam Proven <[hidden email]> wrote:

> On 4 November 2017 at 05:01, Bob <[hidden email]> wrote:
>> I upgraded from 17.04 to 17.10 in a test partition on my laptop a Lenovo T60.
>> When the upgrade was done I rebooted.  The system ran for a while with only a
>> black screen.  Since nothing was happening I entered my password, nothing
>> happened, I pressed some keys, nothing happened, at this point I assumed the
>> upgrade had failed so I pressed the power button.  Pressing the power button
>> caused the moon symbol on the laptop to light, this was a surprise so after the
>> disk activity light stopped blinking I pressed the power button again.  This
>> caused the login screen to display.  I did login and it appears that the system
>> functions properly.
>>
>> Now any time I boot that system it comes up with a black screen and I have to
>> press the power to put the system to sleep and then press the power button
>> again to wake it up and display the login screen.
>>
>> Since I have not seen any messages about anyone having the problem I assume I
>> am the only one with this problem.
>>
>> Anyone have an idea on how to fix this?
>
> https://www.cnet.com/products/lenovo-thinkpad-t60/specs/
>
> ATI graphics.
>
> What desktop? If was Unity, it's now GNOME. GNOME defaults to Wayland.
> Wayland won't work with ATI proprietary display drivers, but I have a
> machine of that age with an ATI Mobility Radeon GPU and it works well
> enough.

Is Wayland (or X for that matter) running before login?

However, if the user has autologin enabled then that may be the issue,
and it is not a login prompt he is getting, but an unlock prompt. @Bob
if you have got autologin enabled then disable it and see what
happens.

Colin

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Re: black screen after boot

Liam Proven
On 4 November 2017 at 14:25, Colin Law <[hidden email]> wrote:
>
> Is Wayland (or X for that matter) running before login?

Yes, for the display manager.

> However, if the user has autologin enabled then that may be the issue,
> and it is not a login prompt he is getting, but an unlock prompt. @Bob
> if you have got autologin enabled then disable it and see what
> happens.

Good point.

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Re: black screen after boot

Colin Law
On 4 November 2017 at 13:31, Liam Proven <[hidden email]> wrote:
> On 4 November 2017 at 14:25, Colin Law <[hidden email]> wrote:
>>
>> Is Wayland (or X for that matter) running before login?
>
> Yes, for the display manager.

I thought lightdm started X or Wayland when you login, selectable from
the login screen.

Colin

>
>> However, if the user has autologin enabled then that may be the issue,
>> and it is not a login prompt he is getting, but an unlock prompt. @Bob
>> if you have got autologin enabled then disable it and see what
>> happens.
>
> Good point.
>
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Re: black screen after boot

Liam Proven
On 4 November 2017 at 15:03, Colin Law <[hidden email]> wrote:
>
> I thought lightdm started X or Wayland when you login, selectable from
> the login screen.

LightDM (for Unity) and GDM (for GNOME 3) *are graphical app
themselves* so they need a display server (X.org or Wayland) running
already in order for them to be able to draw graphics on the screen.

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Re: black screen after boot

Colin Law
On 4 November 2017 at 14:43, Liam Proven <[hidden email]> wrote:
> On 4 November 2017 at 15:03, Colin Law <[hidden email]> wrote:
>>
>> I thought lightdm started X or Wayland when you login, selectable from
>> the login screen.
>
> LightDM (for Unity) and GDM (for GNOME 3) *are graphical app
> themselves* so they need a display server (X.org or Wayland) running
> already in order for them to be able to draw graphics on the screen.

OK, understood, thanks

Colin

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Bob
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Re: black screen after boot

Bob
In reply to this post by Liam Proven
** Reply to message from Liam Proven <[hidden email]> on Sat, 4 Nov 2017
14:04:09 +0100

> On 4 November 2017 at 05:01, Bob <[hidden email]> wrote:
> > I upgraded from 17.04 to 17.10 in a test partition on my laptop a Lenovo T60.
> > When the upgrade was done I rebooted.  The system ran for a while with only a
> > black screen.  Since nothing was happening I entered my password, nothing
> > happened, I pressed some keys, nothing happened, at this point I assumed the
> > upgrade had failed so I pressed the power button.  Pressing the power button
> > caused the moon symbol on the laptop to light, this was a surprise so after the
> > disk activity light stopped blinking I pressed the power button again.  This
> > caused the login screen to display.  I did login and it appears that the system
> > functions properly.
> >
> > Now any time I boot that system it comes up with a black screen and I have to
> > press the power to put the system to sleep and then press the power button
> > again to wake it up and display the login screen.
> >
> > Since I have not seen any messages about anyone having the problem I assume I
> > am the only one with this problem.
> >
> > Anyone have an idea on how to fix this?
>
> https://www.cnet.com/products/lenovo-thinkpad-t60/specs/
>
> ATI graphics.
>
> What desktop? If was Unity, it's now GNOME. GNOME defaults to Wayland.
> Wayland won't work with ATI proprietary display drivers, but I have a
> machine of that age with an ATI Mobility Radeon GPU and it works well
> enough.
>
> My GPU is no longer supported by fglrx so I didn't have them, but it's
> a different one to yours and I don't know if yours are. Remove any
> trace of them if so.
>
> Also try adding the "nomodeset" line to your kernel parameters in GRUB.

Thanks, the "nomodeset" got things working.

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Robert Blair


The inherent vice of capitalism is the unequal sharing of the blessings.  The inherent blessing of socialism is the equal sharing of misery.  -- Winston Churchill

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Re: black screen after boot

Liam Proven
On 5 November 2017 at 22:54, Bob <[hidden email]> wrote:
>
> Thanks, the "nomodeset" got things working.

Oh, excellent! Glad to hear it.

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