screen flickers and turns on and off

[Ali Shtarbanov]

Linux Mint 9 RC

After install, the computer was working without problems and out nowhere, the screen just began flickering AND TURNING ON AND OFF, while I was in firebox surfing. This is occurring on my desktop so you can actually HEAR the monitor turning on and off. On the screen apprears the text WITH the quotation marks "unknown parameter encountered" (I I can see it correctly because of the constant turning on and off.

I restarted the computer and it was working fine for some time. but the same thing happened again. This time, I was in the Software Manager and was in the middle of installing VLC. Also, at the same time I was copying files from one partition to another. This time I clearly saw that it sayd "Unknown parameter encountered" because a second after taht, the screen began doring the flickering and turning on and off.

Since this behaviour occurred twice and the tasks I was doing at the time that started were unrelated, I suppose this is something that was not caused by my actions.

I just want to mention that I had been using Mint 8 since the first week of its release but I never had even a similar problem like the one I am having now. So I suppose some previously working feature had been messed up.

[Clement Lefebvre (clementlefebvre)]

Can you provide more information about your graphic card? Can you paste the output of the command "lspci"?

[Ali Shtarbanov (ametedinov)]

This is the output of lspci

00:00.0 Host bridge: Intel Corporation 82845G/GL[Brookdale-G]/GE/PE DRAM Controller/Host-Hub Interface (rev 01)
00:02.0 VGA compatible controller: Intel Corporation 82845G/GL[Brookdale-G]/GE Chipset Integrated Graphics Device (rev 01)
00:1d.0 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #1 (rev 01)
00:1d.1 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #2 (rev 01)
00:1d.2 USB Controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) USB UHCI Controller #3 (rev 01)
00:1d.7 USB Controller: Intel Corporation 82801DB/DBM (ICH4/ICH4-M) USB2 EHCI Controller (rev 01)
00:1e.0 PCI bridge: Intel Corporation 82801 PCI Bridge (rev 81)
00:1f.0 ISA bridge: Intel Corporation 82801DB/DBL (ICH4/ICH4-L) LPC Interface Bridge (rev 01)
00:1f.1 IDE interface: Intel Corporation 82801DB (ICH4) IDE Controller (rev 01)
00:1f.3 SMBus: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) SMBus Controller (rev 01)
00:1f.5 Multimedia audio controller: Intel Corporation 82801DB/DBL/DBM (ICH4/ICH4-L/ICH4-M) AC'97 Audio Controller (rev 01)
01:08.0 Ethernet controller: Intel Corporation 82801DB PRO/100 VE (LOM) Ethernet Controller (rev 81)

[Ali Shtarbanov (ametedinov)]

This same problem also occurs with Ubuntu 10.04

[Ali Shtarbanov (ametedinov)]

By the way I tested the power management and it works properly. When the display turns off and then you move the mouse, it DOES turn back on again. So at least we know that the problem is somewhere else.

[Fabio Marconi (fabiomarconi)]

Hello
Is this problem present with the latest updates ?
Thanks
Fabio

[Fabio Marconi (fabiomarconi)]

We are closing this bug report because it lacks the information we need to investigate the problem, as described in the previous comments. Please reopen it if you can give us the missing information, and don't hesitate to submit bug reports in the future. To reopen the bug report you can click on the current status, under the Status column, and change the Status back to "New". Thanks again!