KVM Help and Recommendations for FC3

Terry Polzin fox3ec208 at wideopenwest.com
Tue Nov 15 20:55:34 UTC 2005


On Tuesday 15 November 2005 03:44 pm, Matt Roth wrote:
> List members,
>
> I am experiencing compatibility problems with a Belkin OmniView PRO
> 8-Port KVM switch and Fedora Core 3.  Any help you could provide
> resolving these problems without purchasing a new KVM would be greatly
> appreciated.  From reading this list and the related Bugzilla bugs, I
> find that improbable, so I'd also be grateful for any recommendations
> for a new KVM switch.  I apologize for this being a bit of a repost, but
> I must justify the new purchase to my management.  Any suggestions will
> be run past Dell technical support as well.  Once I have implemented the
> solution, I will post it back to the list.  KVM problems seem to be
> somewhat common, so I hope it is a significant contribution to the
> community.
>
> Some of the problems I am experiencing under Fedora Core 3 follow:
>
> - Without switching between computers, the monitor flickers and the
> keyboard and/or mouse connection is dropped.
> - Without switching between computers, the monitor stops updating the
> display.  This deadlocks any programs attempting to print to the display
> until the situation is resolved.
> - After switching to a computer, the keyboard and/or mouse connection is
> dropped or extremely erratic (ie. Keystrokes being interpreted as
> function keys.  Keystrokes being generated when the keyboard is not in
> use.  The mouse pointer moving all over the screen, opening and closing
> windows.)
>
> There is also a SUSE machine attached to the KVM that experiences
> similar problems.  The Windows machines seem to be fine.
>
> One of the FC3 machines is connected to the KVM via a PS/2-to-USB
> Y-adapter.
>
> I attempted to resolve these problems as described in prior posts to
> this list, but I didn't have any success.  The steps I took follow:
>
> - Disabling console mouse services by preventing gpm from starting at boot.
> - Disabling DPMS (Energy Star) features by editing xorg.conf.
> - Disabling PS/2 mouse protocol extensions by editing xorg.conf and
> setting the psmouse.proto kernel parameter to bare (psmouse.proto=bare).
> - Disabling APM functionality in the BIOS and by setting the apm kernel
> parameter to off (apm=off).
> - Disabling the screen saver's awareness of power management via KDE's
> Control Center.
> - Disabling display power management via KDE's Control Center.
>
> There was only one ACPI event configured on the FC3 machines, mapping
> the power button to the "/sbin/shutdown -h now" command, so I left that
> alone.
>
> After performing these steps, I rebooted.  Within five minutes, the
> monitor flickered and the keyboard became unresponsive.  I was at a text
> console at the time and kernel messages similar to the following began
> to appear periodically:
>
> - psmouse.c: bad data from KBC - timeout
> - psmouse.c: Mouse at isa0060/serio1/input0 lost synchronization,
> throwing 2 bytes away.
> - atkbd.c: Unknown key pressed (translated set 2, code 0x7f on
> isa0060/serio0).
> - atkbd.c: Use 'setkeycodes 7f <keycode>' to make it known.
>
> If these problems cannot be resolved through software or other means, we
> are considering purchasing the following KVM switches.  As mentioned
> previously, any feedback regarding these or other KVMs would be
> appreciated:
>
> - APC AP5201
>   - http://www.apc.com/resource/include/techspec_index.cfm?base_sku=AP5201
> - Belkin F1DA108T
>   -
> http://catalog.belkin.com/IWCatProductPage.process?Merchant_Id=&Product_Id=
>122885 - IOGEAR GCS1758 or ATEN CS-1758 (these appear to be the same
> hardware) - http://www.iogear.com/main.php?loc=product&Item=GCS1758
>   -
> http://www.aten.com/products/productItem.php?pcid=20050103163647001&psid=20
>050107104913001&pid=20050224093143008
>
> My personal preference is the APC because a) it's not a Belkin and b)
> the IOGEAR and ATEN KVMs require a USB keyboard and mouse but our
> existing rackmount keyboard/mouse combos have PS/2 interfaces.  Below
> you will find a detailed hardware/OS description of our current (broken)
> KVM setup.  If you need any more information, please request it.
>
> Thank you very much,
>
> Matthew Roth
> InterMedia Marketing Solutions
> Software Engineer and Systems Developer
>
> ============================================================
>
> KVM Switch: Belkin OmniView PRO 8-Port (F1D108-OSD)
> -
> http://www.belkin.com/support/download.asp?download=F1D108-OSD&lang=1&mode=
>   - Interfaces: K: PS/2
>                 V: HDDB15 female
>                 M: PS/2
>
> Keyboard/Mouse: Compaq Internal Keyboard with Trackball (185152-001)
> -
> http://h18000.www1.hp.com/products/servers/options/rackacces/cpqrakopt1.htm
>l - Interfaces: K: PS/2
>                 M: PS/2
>
> Video: Compaq V710 17" Monitor (187896-001)
> - http://www.ridgetechnologies.com/hardware/hardware/monitors.htm
>   - Interfaces: V: HDDB15 male
>
> Computer on Port 1: Dell PowerEdge 6850
> -
> http://www1.us.dell.com/content/products/productdetails.aspx/pedge_6850?c=u
>s&cs=555&l=en&s=biz - Interfaces: K: USB *
>                 V: HDDB15 female
>                 M: USB *
>     * Both are connected to a single USB port via a PS/2-to-USB Y-adapter.
>   - OS: Fedora Core 3 (Kernel: 2.6.12-1.1376_FC3smp x86_64)
>
> Computer on Port 2: Dell PowerEdge 1850
> -
> http://www1.us.dell.com/content/products/productdetails.aspx/pedge_1850?c=u
>s&cs=555&l=en&s=biz - Interfaces: K: PS/2
>                 V: HDDB15 female
>                 M: PS/2
>   - OS: Fedora Core 3 (Kernel: 2.6.12-1.1376_FC3smp x86_64)
>
> Computer on Port 3: Dell PowerEdge 1850
> -
> http://www1.us.dell.com/content/products/productdetails.aspx/pedge_1850?c=u
>s&cs=555&l=en&s=biz - Interfaces: K: PS/2
>                 V: HDDB15 female
>                 M: PS/2
>   - OS: Fedora Core 3 (Kernel: 2.6.12-1.1376_FC3smp x86_64)
>
> Computer on Port 4: Dell PowerEdge 2850
> -
> http://www1.us.dell.com/content/products/productdetails.aspx/pedge_2850?c=u
>s&cs=555&l=en&s=biz - Interfaces: K: PS/2
>                 V: HDDB15 female
>                 M: PS/2
>   - OS: SUSE 9.1 (Kernel: 2.6.4-52-smp x86_64)
>
> Computer on Port 5: Dell PowerEdge 850
> -
> http://www1.us.dell.com/content/products/productdetails.aspx/pedge_850?c=us
>&cs=555&l=en&s=biz - Interfaces: K: PS/2
>                 V: HDDB15 female
>                 M: PS/2
>   - OS: Microsoft Windows Server 2003
>
> Computer on Port 6: None
>
> Computer on Port 7: None
>
> Computer on Port 8: Compaq ProLiant ML750 - Rack Model
> - http://h18000.www1.hp.com/products/quickspecs/10633_na/10633_na.html
>   - Interfaces: K: PS/2
>                 V: HDDB15 female
>                 M: PS/2
>   - OS: Microsoft Windows Advanced Server 2000psmouse.proto=imps


try appending kernel line in /etc/grub.conf with:
psmouse.proto=imps
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 189 bytes
Desc: not available
Url : http://lists.fedoraproject.org/pipermail/users/attachments/20051115/c0e909c3/attachment-0002.bin 


More information about the users mailing list