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
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