# \#a04 **URL:** https://forum.clockworkpi.com/tag/a04/147.md [Latest](https://forum.clockworkpi.com/latest.md) · [Categories](https://forum.clockworkpi.com/categories.md) · [Tags](https://forum.clockworkpi.com/tags.md) --- ## [HDMI output on A04 - disabled?](https://forum.clockworkpi.com/t/hdmi-output-on-a04-disabled/7867)
**Author:** [@henryhu](https://forum.clockworkpi.com/u/henryhu)\ **Replies:** 20\ **Last updated:** [December 10, 2025, 10:10am UTC](https://forum.clockworkpi.com/t/hdmi-output-on-a04-disabled/7867 "2025-12-10T10:10:46Z")
It seems like that tcon\_tv is disabled in dts, and it’s in charge of HDMI output.Are there still some problems to be resolved for HDMI output? --- ## [Apt update fails with NO\_PUBKEY error](https://forum.clockworkpi.com/t/apt-update-fails-with-no-pubkey-error/7951)
**Author:** [@TauPan](https://forum.clockworkpi.com/u/TauPan)\ **Replies:** 6\ **Last updated:** [December 27, 2024, 1:48pm UTC](https://forum.clockworkpi.com/t/apt-update-fails-with-no-pubkey-error/7951 "2024-12-27T13:48:46Z")
Hi! I noticed this yesterday, when I do apt update it fails for one repository that I didn’t add by hand, so I’m guessing it came from my a04 image. root@clockworkpi-a04:~# apt update Hit:1 http://ports.ubuntu.com hirs… --- ## [PSA: arm64 Retroarch cores](https://forum.clockworkpi.com/t/psa-arm64-retroarch-cores/9658)
**Author:** [@DoornailRumba](https://forum.clockworkpi.com/u/DoornailRumba)\ **Replies:** 4\ **Last updated:** [December 27, 2023, 4:27pm UTC](https://forum.clockworkpi.com/t/psa-arm64-retroarch-cores/9658 "2023-12-27T16:27:25Z")
For anyone interested in retro gaming: it’s easy to install Retroarch on DevTerm with sudo apt install retroarch, but then it’s a bummer the first time you navigate the UI to learn that there are no emulator cores. This … --- ## [Need some Helps for compiling own armbian OS for A04](https://forum.clockworkpi.com/t/need-some-helps-for-compiling-own-armbian-os-for-a04/9051)
**Author:** [@Sanguino](https://forum.clockworkpi.com/u/Sanguino)\ **Replies:** 3\ **Last updated:** [January 28, 2023, 3:30am UTC](https://forum.clockworkpi.com/t/need-some-helps-for-compiling-own-armbian-os-for-a04/9051 "2023-01-28T03:30:42Z")
Hi Guys : I just got my DevTerm A04 (A brand new but second-hand) ,I love this small terminal ! I wish I can learn how to compile linux os by myself , I read the guide here Create-DevTerm-A04-OS-image-from-scratch. Ev… --- ## [A04 core board schematics?](https://forum.clockworkpi.com/t/a04-core-board-schematics/8879)
**Author:** [@intelliarm](https://forum.clockworkpi.com/u/intelliarm)\ **Replies:** 1\ **Last updated:** [October 21, 2022, 2:05pm UTC](https://forum.clockworkpi.com/t/a04-core-board-schematics/8879 "2022-10-21T14:05:47Z")
Hi Folks, I’ve been looking for A04 core board schematics. It seems DevTerm/Schematics at main · clockworkpi/DevTerm · GitHub only has A06 and R01 core boards. Does anyone have it? :smiling\_face: --- ## [Hirsute went offline late July 2022, how to manage?](https://forum.clockworkpi.com/t/hirsute-went-offline-late-july-2022-how-to-manage/8770)
**Author:** [@arru](https://forum.clockworkpi.com/u/arru)\ **Replies:** 50\ **Last updated:** [October 19, 2022, 12:52am UTC](https://forum.clockworkpi.com/t/hirsute-went-offline-late-july-2022-how-to-manage/8770 "2022-10-19T00:52:02Z")
So trying to brainstorm here, several users here have already noted that Ubuntu Hirsute was old hat already at the launch of DevTerm, now, as far as I understand, it’s been EOL’d completely which means that apt basically… --- ## [Cmos battery possible for Devterm?](https://forum.clockworkpi.com/t/cmos-battery-possible-for-devterm/8454)
**Author:** [@tumalso](https://forum.clockworkpi.com/u/tumalso)\ **Replies:** 1\ **Last updated:** [May 13, 2022, 8:33am UTC](https://forum.clockworkpi.com/t/cmos-battery-possible-for-devterm/8454 "2022-05-13T08:33:00Z")
Is it possible to develope a hardwareextension regarding a configuration of a system clock? --- ## [Source for WiringPi library with A04 support?](https://forum.clockworkpi.com/t/source-for-wiringpi-library-with-a04-support/8077)
**Author:** [@gougou](https://forum.clockworkpi.com/u/gougou)\ **Replies:** 3\ **Last updated:** [February 24, 2022, 6:55am UTC](https://forum.clockworkpi.com/t/source-for-wiringpi-library-with-a04-support/8077 "2022-02-24T06:55:17Z")
I have been tinkering around trying to run ArchLinux ARM on the device, and while I succeded running base system running the same image from Armbian. Long story short, it uses a bit older glib version (2.32) and I can’t … --- ## [Glitches with graphics acceleration on a04](https://forum.clockworkpi.com/t/glitches-with-graphics-acceleration-on-a04/8043)
**Author:** [@TauPan](https://forum.clockworkpi.com/u/TauPan)\ **Replies:** 1\ **Last updated:** [February 5, 2022, 9:45am UTC](https://forum.clockworkpi.com/t/glitches-with-graphics-acceleration-on-a04/8043 "2022-02-05T09:45:34Z")
I’m using the default image on the a04 and one of the first things I noticed was that all svg icons in chromium (including the ones on this forum) were severely glitched (very warped and noisy) and turning off graphics a… --- ## [No HDMI on A04?](https://forum.clockworkpi.com/t/no-hdmi-on-a04/7868)
**Author:** [@ajorg](https://forum.clockworkpi.com/u/ajorg)\ **Replies:** 6\ **Last updated:** [January 25, 2022, 11:59pm UTC](https://forum.clockworkpi.com/t/no-hdmi-on-a04/7868 "2022-01-25T23:59:08Z")
Trying to use HDMI on my new A04 and I get nothing. xrandr doesn’t see HDMI-1 as a possible output. The cable I’m using is known good from use on my rPi4B and everything else on that board works fine. I do want to try an… --- ## [What's your experience getting audio software to run on DevTerm?](https://forum.clockworkpi.com/t/whats-your-experience-getting-audio-software-to-run-on-devterm/7982)
**Author:** [@apolotary](https://forum.clockworkpi.com/u/apolotary)\ **Replies:** 3\ **Last updated:** [January 24, 2022, 11:17am UTC](https://forum.clockworkpi.com/t/whats-your-experience-getting-audio-software-to-run-on-devterm/7982 "2022-01-24T11:17:54Z")
Been using a A04 DevTerm for about a week and I am enjoying it so far! I was wondering about getting it to work as a portable software synth setup. Has anyone got any luck with linux / Raspberry Pi version of audio softw… --- ## [Virtual T Emulator errors](https://forum.clockworkpi.com/t/virtual-t-emulator-errors/7973)
**Author:** [@retrocactus](https://forum.clockworkpi.com/u/retrocactus)\ **Replies:** 0\ **Last updated:** [January 20, 2022, 5:31pm UTC](https://forum.clockworkpi.com/t/virtual-t-emulator-errors/7973 "2022-01-20T17:31:23Z")
I’m still fairly new to Linux and am trying to get the Virtual T (TRS-80 Model 100 emulator) running on my Devterm A04. I installed it via the sourceforge page download. It errors out when I launch it saying that it can… --- ## [WooHoo - A04 up and running... and more importantly.... DOOM!](https://forum.clockworkpi.com/t/woohoo-a04-up-and-running-and-more-importantly-doom/7824)
**Author:** [@Paul\_McGuinness](https://forum.clockworkpi.com/u/Paul_McGuinness)\ **Replies:** 6\ **Last updated:** [January 16, 2022, 4:11am UTC](https://forum.clockworkpi.com/t/woohoo-a04-up-and-running-and-more-importantly-doom/7824 "2022-01-16T04:11:45Z")
My A04 arrived at 11:30 - Up and running by 12:30, improved mouse/key/sound by 13:00 Doom by 13:30 :slight\_smile: Priorities, right? --- ## [Has any one received the A04 unit?](https://forum.clockworkpi.com/t/has-any-one-received-the-a04-unit/7709)
**Author:** [@Valssu](https://forum.clockworkpi.com/u/Valssu)\ **Replies:** 14\ **Last updated:** [January 11, 2022, 1:58pm UTC](https://forum.clockworkpi.com/t/has-any-one-received-the-a04-unit/7709 "2022-01-11T13:58:01Z")
I think as the forecast, the shipment has been done? Any news? --- ## [Anything special to set up audio on an A04?](https://forum.clockworkpi.com/t/anything-special-to-set-up-audio-on-an-a04/7880)
**Author:** [@henryxchung](https://forum.clockworkpi.com/u/henryxchung)\ **Replies:** 3\ **Last updated:** [January 10, 2022, 12:10am UTC](https://forum.clockworkpi.com/t/anything-special-to-set-up-audio-on-an-a04/7880 "2022-01-10T00:10:37Z")
I received my long awaited DevTerm A04 last week and there is no audio, neither from the built-in speakers nor from plugged-in headphones. I’ve tried a couple of different applications, including Chromium playing YouTube… --- ## [DevTerm A04 kernel headers/sources?](https://forum.clockworkpi.com/t/devterm-a04-kernel-headers-sources/7801)
**Author:** [@annathyst](https://forum.clockworkpi.com/u/annathyst)\ **Replies:** 4\ **Last updated:** [January 5, 2022, 3:18am UTC](https://forum.clockworkpi.com/t/devterm-a04-kernel-headers-sources/7801 "2022-01-05T03:18:29Z")
Hello ClockworkPi folks, Where can I find the kernel sources (and, for that matter, the sources for the other -a04 packages) for the A04? I can see the CM3 and A06 patches in the DevTerm git repo, but not most of the A0…