KVM-A3: Difference between revisions

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==FAQ==
==FAQ==
* First of all, we recommend you to get more FAQ information on the official website: [https://docs.pikvm.org/faq/ official FAQ], or check the following FAQ;
{{KVM-FAQ}}
* You can post a issue ticket at [https://geekworm.com/community/forum/topic/78220/pikvm-faq Geekworm forum] or email to us (support@geekworm.com) and attached your installation pictures or videos to get some help.
* Blog sharing for reference: https://www.andysblog.de/kvm-over-ip-pikvm-als-bausatz
 
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Q1: Which pins are available on the KVM-A3?
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A: You only can use GPIO16,26,11,17,25,9,10 pins on KVM-A3
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Q2. Why the device does not show the video only display <b><span class="tb_red">No Signals</span></b>?
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A:
* Please check the hardware connection. Double-check that the video capture device is connected correctly and tightly.
* Make sure you use the original HDMI port. If your desktop only has a VGA display port, there may be no video signal when you use VGA to HDMI adapter, and there is no way to solve this; However, you can try to lower the resolution and restart the PC to test, but the probability of success is very low.
* Change the HDMI cable to test.
* Test the X630 separately to check if there is HDMI output.
* Some laptops do not output any signal until you switch the output (usually via the FN + and an F5 key on the keyboard).
* Your computer maybe enter sleep mode, please exit sleep mode
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Q3. How to login pikvm?
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A: Input https://pikvm/ or the XX.XX.XX.XX ip address on the web explorer, then input user: admin, the default password is 'admin' also. Or refer to [https://docs.pikvm.org/first_steps/#getting-access-to-pikvm pikvm doc]
 
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Q4. How to switch to root user?
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A: run the following command:
su root
Then type the password, the default password is 'root' also.
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Q5. How to enable OLED display?
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A: Run the following command to enable OLED display:
rw
systemctl enable --now kvmd-oled
ro
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Q6. Why OLED is not display?
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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 contact us if it's a wrong pin order;
 
[[File:OLED-IMG-4373-1.jpg]]
 
then runt the following command to check 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: -- -- -- -- -- -- -- -- 
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'''3c''' is a hexadecimal number, it is the I2C address of OLED, if you can’t find this value, please shut down and reconnect X630-A3&OLED and run this command again, If you still can't find the OLED's I2C address, the OLED screen may be damaged.
 
'''PS''': The newest PiKVM V3 image does not include '''i2cdetect''' tool, and you can use the following command to check the i2c device
ls /sys/class/i2c-dev/i2c-1/devices/
4. Then run the following command to enable OLED display:
rw
systemctl enable --now kvmd-oled
ro
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Q7. I want to control several pc power. Is it possible with one PiKVM-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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