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Full Discussion: Screen fading out and in.
Operating Systems Linux Ubuntu Screen fading out and in. Post 303003450 by kkeevv on Thursday 14th of September 2017 08:55:50 AM
Old 09-14-2017
Quote:
Originally Posted by Corona688
Are you in the physical terminal when this happens? (i.e. ctrl-alt-f1 -- ctrl-alt-f7 ) Terminal blanking there is a kernel option, I think.
No. It is happening at the GUI while doing simple things ie playing mine sweep, or using firefox. It even occurs if nothing is loaded. It is random, but i have noticed it happens more, the longer the computer is powered up. When I reboot the problem goes away. Sometimes I can spend hours on line with no problem. I let the PC set a few hours and come back and the problem starts or doesn't.

I have since removed Ubuntu from 1st ("dual boot") PC in order to test Solaris 11.

---------- Post updated 09-14-17 at 07:55 AM ---------- Previous update was 09-13-17 at 11:38 PM ----------

Quote:
Originally Posted by Corona688
There may also be options for controlling this hidden in /proc/acpi or /sys/, I've seen some laptop hardware do that.
That sounds reasonable to me, but what do I know.

There is one file in /proc/acpi named wakeup. I don't understand it's contents...

Device S-state Status Sysfs node
VBTN S4 *enabled platform:PNP0C0C:00
PCI0 S5 *disabled no-busSmilieci0000:00
PCI4 S5 *disabled pci:0000:00:1e.0
PCI2 S5 *disabled pci:0000:00:1c.0
PCI3 S5 *disabled
PCI1 S5 *disabled pci:0000:00:01.0
PCI5 S5 *disabled
PCI6 S5 *disabled
MOU S3 *disabled
USB0 S3 *enabled pci:0000:00:1d.0
USB1 S3 *enabled pci:0000:00:1d.1
USB2 S3 *enabled pci:0000:00:1d.2
USB3 S3 *enabled pci:0000:00:1d.3

/sys has numerous items.

I disabled suspend and haven't experienced the problem. I'm not saying that is the cause.

I installed Solaris on the other PC that had same problem with Ubuntu and it doesn't have that issue any longer.

Thank you folks for your feed back. When I get WIFI working on Solaris, I think I'll 86 Ubuntu. I prefer Solaris's layout.
 

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LEARN ABOUT NETBSD

cmdide

CMDIDE(4)						   BSD Kernel Interfaces Manual 						 CMDIDE(4)

NAME

     cmdide -- CMD Technology and Silicon Image IDE disk controllers driver

SYNOPSIS

     cmdide* at pci? dev ? function ? flags 0x0000
     options PCIIDE_CMD064x_DISABLE
     options PCIIDE_CMD0646U_ENABLEUDMA

DESCRIPTION

     The cmdide driver supports the CMD Technology PCI0640, PCI0643, PCI0646, PCI0648, PCI0649, and Silicon Image 0680 IDE controllers, and pro-
     vides the interface with the hardware for the ata(4) driver.

     The 0x0002 flag forces the cmdide driver to disable DMA on chipsets for which DMA would normally be enabled.  This can be used as a debugging
     aid, or to work around problems where the IDE controller is wired up to the system incorrectly.

SEE ALSO

     ata(4), atapi(4), intro(4), pci(4), pciide(4), wd(4), wdc(4)

BUGS

     There's no way to reliably know if a PCI064x controller is enabled or not.  If the driver finds a PCI064x, it will assume it is enabled
     unless the PCIIDE_CMD064x_DISABLE option is specified in the kernel config file.  This will be a problem only if the controller has been dis-
     abled in the BIOS and another controller has been installed and uses the ISA legacy I/O ports and interrupts.

     The PCI0646U controller is known to be buggy with Ultra-DMA transfers, so Ultra-DMA is disabled by default for this controller.  To enable
     Ultra-DMA, use the PCIIDE_CMD0646U_ENABLEUDMA option.  Ultra-DMA can eventually be disabled on a per-drive basis with config flags, see
     wd(4).

     The timings used for the PIO and DMA modes for controllers listed above are for a PCI bus running at 30 or 33 MHz.  This driver may not work
     properly on overclocked systems.

BSD
								 December 13, 2003							       BSD
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