Search found 118 matches

by MarkEHansen
2017/09/16 20:25:26
Forum: CentOS 7 - Hardware Support
Topic: [RESOLVED] Using a built-in serial port with Linux CentOS 7.3
Replies: 1
Views: 164

Re: Using a built-in serial port with Linux CentOS 7.3

Well, it turns out it was the 10-pin header to DB9 serial adapter cable. I ordered a couple of these: https://www.amazon.com/gp/product/B001Y1F0HW/ref=oh_aui_detailpage_o04_s00?ie=UTF8&psc=1 and it just started working (with the RX/TX configured the same as when it was working connected to my Wi...
by MarkEHansen
2017/09/13 18:26:28
Forum: CentOS 7 - Hardware Support
Topic: [RESOLVED] Using a built-in serial port with Linux CentOS 7.3
Replies: 1
Views: 164

[RESOLVED] Using a built-in serial port with Linux CentOS 7.3

I have a hardware project I'm building which needs to communicate with a host controller application running on a PC. I'm using a PIC microcontroller and an RS232 chip to drive the serial communications. My serial cable includes only 3 pins: Ground, RX and TX. When connecting this hardware to a seri...
by MarkEHansen
2017/09/13 14:51:34
Forum: CentOS 7 - Hardware Support
Topic: Serial Port card with native support in CentOS 7?
Replies: 2
Views: 151

Re: Serial Port card with native support in CentOS 7?

Sorry, it was a typo. CentOS 7.3.1611
I've updated the original post.
by MarkEHansen
2017/09/13 13:49:09
Forum: CentOS 7 - Hardware Support
Topic: Serial Port card with native support in CentOS 7?
Replies: 2
Views: 151

Serial Port card with native support in CentOS 7?

I am running CentOS 7.3.1611 on a PC using an ASUS M2NPV-VM motherboard. This board has a single on-board serial port as a 10-pin header. I've connected a a cable to it (10-pin connector to a DB9) but can't for the life of me get it to work. The port is enabled in the BIOS and dmesg shows that it is...
by MarkEHansen
2017/01/02 23:44:49
Forum: CentOS 7 - Software Support
Topic: Network UPS Tools won't kill power to host as part of shutdown
Replies: 10
Views: 976

Re: Network UPS Tools won't kill power to host as part of shutdown

I don't understand how this pertains to my question. If it does and I missed it, can you please elaborate? I know that NUT supports the ability to send a power-off command to the UPS during the shutdown exactly for the case I'm trying to solve. I've had this working on other Linux systems. I just ca...
by MarkEHansen
2017/01/02 01:46:16
Forum: CentOS 7 - Software Support
Topic: Network UPS Tools won't kill power to host as part of shutdown
Replies: 10
Views: 976

Re: Network UPS Tools won't kill power to host as part of shutdown

Ah sorry I probably understood your first post wrong. Sounds like your UPS doesn't recognize the power off command (for example, due to an incompatibility with NUT?). Is there a way to test this command manually? to force NUT to send the command somehow? just to see if that is the problem. The scri...
by MarkEHansen
2017/01/01 23:31:09
Forum: CentOS 7 - Software Support
Topic: Network UPS Tools won't kill power to host as part of shutdown
Replies: 10
Views: 976

Re: Network UPS Tools won't kill power to host as part of shutdown

I had a similar problem on one of my servers, which was being used for running various VM's. The solution was simple, go to the BIOS and find the option that says: boot after loss of power, and set it to ALWAYS. So no matter how the server was powered off, once the UPS gives it power, the server wi...
by MarkEHansen
2016/12/31 23:59:57
Forum: CentOS 7 - Software Support
Topic: Network UPS Tools won't kill power to host as part of shutdown
Replies: 10
Views: 976

Re: Network UPS Tools won't kill power to host as part of shutdown

Thanks, but I'm a little confused by this. We need the FSD to happen at the correct time - it needs to be after the host has completed its shutdown process but before the host powers off. How can we be sure this timer event will cause the FSD at the correct moment? It seems like the FSD has to fit w...
by MarkEHansen
2016/12/31 15:21:04
Forum: CentOS 7 - Software Support
Topic: Network UPS Tools won't kill power to host as part of shutdown
Replies: 10
Views: 976

Network UPS Tools won't kill power to host as part of shutdown

I have CentOS 7.2 (up to date using yum check-update) using systemd and have installed the packages for Network UPS tools: nut.x86_64 2.7.2-3.el7 @epel nut-client.x86_64 2.7.2-3.el7 @epel I have NUT configured based on the instructions in the following page: https://www.luzem.com/2015/01/25/install-...
by MarkEHansen
2015/12/21 21:40:06
Forum: CentOS 7 - General Support
Topic: Is my SATA disk going bad?
Replies: 10
Views: 1054

Re: Is my SATA disk going bad?

Thanks. Was there something I needed to do to get those error values to fill in properly, or are they automatically filled in? I'm just wondering if I needed to run something (correctly) before those fields would contain valid values, and the zeros may just mean that the appropriate test(s) haven't ...