Changes between Version 16 and Version 17 of KnownProblems


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Timestamp:
Mar 31, 2012, 1:53:59 AM (7 years ago)
Author:
dazarewicz
Comment:

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  • KnownProblems

    v16 v17  
    55== Suspend / Resume ==
    66Suspend / Resume only works on a very small number of systems. If Suspend / Resume works for you, consider yourself among the few lucky ones.  If it does not work for you, please wait for more progress to be made and try a later version.  Please do not report problems with Suspend / Resume at this time.
     7
     8== Spurious interrupts with certain NVIDIA based motherboards ==
     9
     10Some NVIDIA motherboards will generate spurious interrupts in Mode 1 (/VW mode) when the desktop starts. These interrupts occur in a way that cannot be handled by the kernel and cause a kernel trap.  There currently is no solution to this problem. You cannot use the /VW switch on these motherboards.
    711
    812== Power Off ==
     
    4953Starting with version 3.20.01, changes were made to make the PSD compatible with an even larger number of vendor's ACPI. This may have increased the boot time by a few seconds on some systems. On a few systems, the boot time may have increased significantly (30-40 seconds). The slowness occurs when the Kernel is loading the basedev drivers during boot. The basedev drivers are loaded in between the time the OS/2 IBM copyright message is displayed on the screen and the time the PSD sign on banner is displayed.  This is not an ACPI.PSD problem. This is a peculiarity in the way certain BIOS operate (typically BIOS from Award). The OS/2 kernel uses the BIOS to load the basedev drivers, In order for this to work in Mode 2, the PSD must tell the BIOS to switch interrupt modes and reassign certain interrupts each time the Kernel calls the BIOS. Most BIOS do this very quickly. A few take a long time to make the switch.
    5054
    51 Since this is a BIOS issue and not an ACPI.PSD issue, it is extremely unlikely that I will be able to do anything about this slowness. However, I will gather more information in the hope that there may be something I can do -- at least for some of the systems. if you have this slowness issue on your system you can help me gather data by installing the debug version of the PSD, creating a testlog, and attaching it to ticket #536. If the increase in boot time bothers you, your only solution is to run your system with the /VW switch which does not require the interrupt mode switching.
     55Since this is a BIOS issue and not an ACPI.PSD issue, it is extremely unlikely that I will be able to do anything about this slowness. However, I will gather more information in the hope that there may be something I can do -- at least for some of the systems. The amount of time it takes to load all the basedev drivers will vary depending on how many basedev drivers are loaded, how big the basedev drivers are, and how fast your system is. If your system is reasonably fast, you have a typical installation, and it takes significantly longer than 15 seconds to load the basedev drivers, you can help me gather data by installing the debug version of the PSD, creating a testlog, and attaching it to ticket #536. If the increase in boot time bothers you, your only solution is to run your system with the /VW switch which does not require the interrupt mode switching.
    5256
    5357== Immediate suspend due to misbehaving SLPB device ==