Template:KVM-FAQ: Difference between revisions

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* Blog sharing for reference: https://www.andysblog.de/kvm-over-ip-pikvm-als-bausatz
* Blog sharing for reference: https://www.andysblog.de/kvm-over-ip-pikvm-als-bausatz
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Q: How to enable oled display on [[KVM-A4]]?
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A. Refer to https://geekworm.com/community/forum/topic/85024/enable-oled-on-geekworm-pikvm-a4-kit
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Q: Which pins are available on the KVM-A3?
Q: Why OLED is not display?
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A: You only can use GPIO16, 26, 11, 17, 25, 9, 10 pins on [[KVM-A3]]
A: Please follow the steps below to check
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1. Please confirm that the OS is correct according to your Raspberry Pi version:
 
Due to downloading the wrong firmware, the OLED cannot be displayed. We ALSO made such mistakes during testing
 
*For Raspberry Pi 4 : https://pikvm.org/download/
 
[[File:Pi4-V3-HAT.png|800px]]
 
*For Raspberry Pi Zero 2 W : https://docs.pikvm.org/flashing_os/
 
[[File:PiKVM V2 Platform.png|800px]]
 
2. Please check if the order of OLED screen pins is correct, please email to support@geekworm.com if it's a wrong pin order;
 
[[File:OLED-IMG-4373-1.jpg|800px]]
 
The run the following command to check the I2C address
sudo i2cdetect -y 1
<pre>
    0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                        -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- 3c -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- -- 
</pre>
 
3c is a hexadecimal number, it is the I2C address of OLED, if you can’t find this value, please shut down and reconnect shield and OLED, then run this command again, If you still can't find the OLED's I2C address, the OLED screen may be damaged.
 
 
'''PS''': Since the i2cdetect tool is not installed by default in pikvm os, you need to install it first. You can install it through the following command
<pre>
pikvm-update
rw
pacman -S i2c-tools -y
</pre>
 
4. Then run the following command to enable OLED display:
rw
systemctl enable --now kvmd-oled
ro


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'''5.''' Please refer to https://geekworm.com/community/forum/topic/200314/kvm-a3-096-oled-display-is-dead if you can't solve the question.
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Q: I want to control several pc power. Is it possible with one [[KVM-A3]] and several [[X630-A5]]?
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A. No, one kit can only control one pc, you can refer to [[X680]] to control up to 4 PCs.
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Q: How to do if [[KVM-A8]] hangs up or reboot or has to be started manually?
Q: How can I access the device from an external network?
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A. The [[KVM-A8]] hardware itself does not cause the system to reboot, and [[KVM-A8 shield is controled by raspberry pi 4;
A:Please refer to the official tutorial : https://docs.pikvm.org/v3/
 
'''Please ensure these keys:'''
 
1. The [https://pikvm.org/download/ PiKVM OS version] is correct;
 
2. Check & use a high-quality power supply;
 
3. Whether the raspberry pi 4 temperature is too high;
 
4. Contact us via email to support@geekworm.com


[[File:Kvm-a8-cable.jpg]]


If you find that the color wiring is wrong, please contact us at support@geekworm.com
[[File:KVM_Networking.png|800px]]
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Q. I want to control several pc power. Is it possible with one [[KVM-A8]]
Q: How do I emulate various USB devices on the target machine?
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A: No, one PiKVM-A8 can only control one pc. Please refer to [[X680]] 4-port IP KVM Switch.
[[File:How-to-emulate-various-USB-devices-on-the-target-machine.png]]
 
More details, pls refer to: https://discord.com/channels/580094191938437144/896216359963332628/1021503994436276245
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Q. How to login pikvm os?
Q: How to login pikvm os?
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Q. How to switch root user?
Q: How to switch root user?
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  su root
  su root
  #default password  is root also
  #default password  is root also
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Q: Why does my PC stay in a continuous boot loop or act as if the power button is "always pressed" when using [[KVM-A3]]?
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A: This issue is typically caused by an incomplete cable connection, specifically the absence of the USB-OTG cable. Please ensure that all required cables are fully seated and connected before powering on your device.
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Q: Which pins are available on the [[KVM-A3]]?
</div>
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A: You only can use GPIO16, 26, 11, 17, 25, 9, 10 pins on [[KVM-A3]]
</div>
</div>
<div class="toccolours mw-collapsible mw-collapsed">
<div style="font-weight:bold;line-height:1.0;">
Q: I want to control several pc power. Is it possible with one [[KVM-A3]] and several [[X630-A5]]?
</div>
<div class="mw-collapsible-content">
A. No, one kit can only control one pc, you can refer to [[X680]] to control up to 4 PCs.
</div>
</div>
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<div style="font-weight:bold;line-height:1.0;">
Q: How to enable oled display on [[KVM-A4]]?
</div>
<div class="mw-collapsible-content">
A. Refer to https://geekworm.com/community/forum/topic/85024/enable-oled-on-geekworm-pikvm-a4-kit
</div>
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Q.  Does [[KVM-A8]] support passive heatsink such as (P165-A or P165-B etc) instead of fan?
Q: How to do if [[KVM-A8]] hangs up or reboot or has to be started manually?
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A. The [[KVM-A8]] hardware itself does not cause the system to reboot, and [[KVM-A8 shield is controled by raspberry pi 4;
 
'''Please ensure these keys:'''
 
1. The [https://pikvm.org/download/ PiKVM OS version] is correct;
 
2. Check & use a high-quality power supply;
 
3. Whether the raspberry pi 4 temperature is too high;
 
4. Contact us via email to support@geekworm.com
 
[[File:Kvm-a8-cable.jpg]]
 
If you find that the color wiring is wrong, please contact us at support@geekworm.com
</div>
</div>
 
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Q: I want to control several pc power. Is it possible with one [[KVM-A8]]
</div>
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A: No, one PiKVM-A8 can only control one pc. Please refer to [[X680]] 4-port IP KVM Switch.
</div>
</div>
 
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Q: Does [[KVM-A8]] support passive heatsink such as (P165-A or P165-B etc) instead of fan?
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<span class="tb_red">Q: Why is the X680 not working?</span>
<span class="tb_red">Q: Why is the [[X680]] not working?</span>
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Q: Why is USB mass driver not recognized on X680?
Q: Why is USB mass driver not recognized on [[X680]]?
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Q: Does the x680 support audio?
Q: Does the [[X680]] support audio?
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Q: Does the X680 support PoE power? How to enable PoE Power?
Q: Does the [[X680]] support PoE power? How to enable PoE Power?
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Q: Why can't I switch to another PC on X680?'
Q: Why can't I switch to another PC on [[X680]]?
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Q: Why NVME SSD cannot be recognized on X680?
Q: Why NVME SSD cannot be recognized on [[X680]]?
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Q: How to boot from NVMe SSD on X680?
Q: How to boot from NVMe SSD on [[X680]]?
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Q: Why OLED is not display?
Q: Can PiKVM work on Raspberry Pi 5?
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A: Please follow the steps below to check
 
1. Please confirm that your OS is right:
 
Due to downloading the wrong firmware, the OLED cannot be displayed. We ALSO made such mistakes during testing
 
[[File:Pi4-V3-HAT.png|800px]]
 
2. Please check if the order of OLED screen pins is correct, please email to support@geekworm.com if it's a wrong pin order;
 
[[File:OLED-IMG-4373-1.jpg|800px]]
 
The run the following command to check the I2C address
sudo i2cdetect -y 1
<pre>
    0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:                        -- -- -- -- -- -- -- --
10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
30: -- -- -- -- -- -- -- -- -- -- -- -- 3c -- -- --
40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
70: -- -- -- -- -- -- -- -- 
</pre>
 
3c is a hexadecimal number, it is the I2C address of OLED, if you can’t find this value, please shut down and reconnect shield and OLED, then run this command again, If you still can't find the OLED's I2C address, the OLED screen may be damaged.
 
 
'''PS''': Since the i2cdetect tool is not installed by default in pikvm os, you need to install it first. You can install it through the following command
<pre>
pikvm-update
rw
pacman -S i2c-tools -y
</pre>
 
4. Then run the following command to enable OLED display:
rw
systemctl enable --now kvmd-oled
ro
</div>
</div>
 
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Q. How do I emulate various USB devices on the target machine?
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[[File:How-to-emulate-various-USB-devices-on-the-target-machine.png]]
A: Not yet, but it will in the future. The Raspberry Pi 5 does not support hardware video encoding, it's not recommended for PiKVM right now.
 
More details, pls refer to: https://discord.com/channels/580094191938437144/896216359963332628/1021503994436276245
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