Can't login after lock screen (black screen)

[brunolabs]

Hi!

After locking screen and monitor going into sleep mode, I can't get the login screen anymore, the monitor stays in sleep mode forever.
In previous Ubuntu versions after pressing any key or the mouse, the login screen showed up, but not anymore. I have to restart the computer.

How can I fix this issue?


Thanks!

[brunolabs]

Can anyone help me with this issue please?

Thank you.

[ventrical]

Could we have more info please.

PC type( hardware)
Distro you are using., ie; trusty, xenial .. etc..

Regards..

[ventrical]

Also from GRuB you can try to choose recovery option and let it run through , then reboot.

Regards..

[brunolabs]

Hello.

It is an old desktop computer. Pentium 4. 2 GB RAM.
Ubuntu version 16.04.
This issue never happened before since version 7.04. Nor with other linux distros.

Do you need any extra information?

Thanks for helping.

[ventrical]

Hello.

It is an old desktop computer. Pentium 4. 2 GB RAM.
Ubuntu version 16.04.
This issue never happened before since version 7.04. Nor with other linux distros.

Do you need any extra information?

Thanks for helping.

Yes .. is it i386 (32bit) or amd64 bit?

Can you post results of

lspci

from terminal ?

.. it may be the kernel upgrade blacklisted some older hardware.

Regards..

[brunolabs]

It is a 64 bit installation.

lspci output:

00:00.0 Host bridge: Silicon Integrated Systems [SiS] SiS649 Host (rev 10)
00:01.0 PCI bridge: Silicon Integrated Systems [SiS] PCI-to-PCI bridge
00:02.0 ISA bridge: Silicon Integrated Systems [SiS] SiS965 [MuTIOL Media IO] (rev 48)
00:02.5 IDE interface: Silicon Integrated Systems [SiS] 5513 IDE Controller (rev 01)
00:02.7 Multimedia audio controller: Silicon Integrated Systems [SiS] SiS7012 AC'97 Sound Controller (rev a0)
00:03.0 USB controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 0f)
00:03.1 USB controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 0f)
00:03.2 USB controller: Silicon Integrated Systems [SiS] USB 1.1 Controller (rev 0f)
00:03.3 USB controller: Silicon Integrated Systems [SiS] USB 2.0 Controller
00:04.0 Ethernet controller: Silicon Integrated Systems [SiS] 191 Gigabit Ethernet Adapter
00:05.0 IDE interface: Silicon Integrated Systems [SiS] 182 SATA/RAID Controller (rev 01)
00:06.0 PCI bridge: Silicon Integrated Systems [SiS] PCI-to-PCI bridge
00:07.0 PCI bridge: Silicon Integrated Systems [SiS] PCI-to-PCI bridge
00:0b.0 FireWire (IEEE 1394): VIA Technologies, Inc. VT6306/7/8 [Fire II(M)] IEEE 1394 OHCI Controller (rev 80)
03:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] RV410 [Radeon X700]
03:00.1 Display controller: Advanced Micro Devices, Inc. [AMD/ATI] Device 5e6f

Thanks.

[ventrical]

It's a miracle you have that dinosaur running

I assume it is graphics card. Could nomodeset installation perhaps help?

Regards..

[Geoffrey_Arndt]

This might sound like a silly question . . . BUT . . . instead of waking the PC from suspend/sleep by pressing any key or activating the track or mouse pad, have you tried pressing the "start button" firmly but briefly . . . ?? In other words, not so long as to initiate a "hard boot". On my various laptops, that IS the way they all wake up from suspend, . . . if suspend mode has been running for a few minutes. Give it a try and let us know one way or another. Apologies if you've already tried this.

[T2uiYKb7]

Can you try pressing " Alt+Ctrl+F1 " ?

This happens to my Dad's computer and although the full desktop disappears he can still access those terminal screens.

If this is the case it's pretty easy to fix. (Maybe, I hope.)

Edit: Sorry what I mean is press " Alt+Ctrl+F1 " while the screen is blank.