runcommand.sh: line 1045: [[: n/a: division by 0

LordPato

Intel i7 3rd Gen. Ubuntu 10.04
RetroPie Version Used 4.6
Built From: RetroPie Website Debian Instructions.
USB Devices connected: Logitech Joystick RumblePad 2
Controller used:Logitech Joystick RumblePad 2
Error messages received:
/opt/retropie/supplementary/runcommand/runcommand.sh: line 1045: [[: n/a: division by 0 (error token is "a")
When trying to run any game.

mitu

Ubuntu 10.04 is from 2010, you're maybe using 20.04 ?

Can you add more details about your harwdare setup - GPU, monitor/TV ? Did you use the Ubuntu desktop image to install ?

Edible

I'm getting the same issue and I'm on a pi4 (raspbian). Latest github clone.

mitu

@Edible Please add more info, as detailed in https://retropie.org.uk/forum/topic/3/read-this-first.

Edible

I should say, Retroarch and emulationstation work, everything is playable, (no keyboard support, but I imagine that's because I haven't yet configured retroarch)

Pi Model or other hardware:
Pi4 model b (armv7l)

Power Supply used:
Official

RetroPie Version Used (eg 3.6, 3.8.1, 4.1 - do not write latest):
I have no clue what to put here...
Emulationstation: Version 2.9.3rp

RetroArch: Frontend for libretro -- v1.8.8 -- 9552f87 --
Compiler: GCC (8.3.0) 32-bit Built: Oct 12 2020

Built From:
(output of retropie-setup?)
Version: 4.6.9 - Last Commit: 4 days ago (39d72a2)

USB Devices connected: Not relevant but...
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 007: ID 413c:2113 Dell Computer Corp.
Bus 001 Device 006: ID 093a:2510 Pixart Imaging, Inc. Optical Mouse
Bus 001 Device 005: ID 152d:2338 JMicron Technology Corp. / JMicron USA Technology Corp. JM20337 Hi-Speed USB to SATA & PATA Combo Bridge
Bus 001 Device 004: ID 05e3:0608 Genesys Logic, Inc. Hub
Bus 001 Device 003: ID 0810:0001 Personal Communication Systems, Inc. Dual PSX Adaptor
Bus 001 Device 002: ID 2109:3431 VIA Labs, Inc. Hub
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

Controller used:
Twin USB Joystick adaptor: Sony PS2 Dualshock controller

Error messages received:
/opt/retropie/supplementary/runcommand/runcommand.sh: line 1045: [[: n/a: division by 0 (error token is "a")

Verbose log (if relevant):
runcommand.info https://tpaste.us/prWW
runcommand.log https://tpaste.us/W71R

Guide used: (Mention if you followed a guide)
https://retropie.org.uk/docs/Manual-Installation/#install-retropie

File: (File with issue - with FULL path)
All of them

Emulator: (Name of emulator - if applicable)
All of them with exception to mario on love2d. which launches in windowed mode

Attachment of config files: (PLEASE USE PASTEBIN.COM FOR LARGE LOGS)
retroarch.cfg https://termbin.com/ftg2

Heres my /boot/config.txt just in case https://tpaste.us/g6M6
and xrandr https://tpaste.us/ejeV

How to replicate the problem:
No idea, but looking into line 1045 it seems video related.

mitu

@Edible said in runcommand.sh: line 1045: [[: n/a: division by 0:

/opt/retropie/supplementary/runcommand/runcommand.sh: line 1045: [[: n/a: division by 0 (error token is "a")

Are you running EmulationStation from the desktop environment ?

Edible

Terminal, Tmux.

that line happens right before it launches a game.

mitu

@Edible Running from the desktop env is not a supported or tested configuration on a Pi. Exit the desktop environment and launch EmulationStation from the console, see if you get the same errors.

Edible

No errors after launching from tty

I'll stick to playing on X tho, you only get that error message but everything works and I like switching windows, anyway thanks!

Edible

I finally know what the error is. line 1045 has

if [[ -n "$HAS_MODESET" && "${MODE_CUR[5]}" -gt 0 ]]; then

now $HAS_MODESET is x11, which seems normal but MODE_CUR[5] is actually n/a, which is not a number. thus it gives that error.

looking around, n/a gets set in get_x11_mode_info here

    # aspect ratio cannot be determined for X11
    mode_info[4]="n/a"

However strangely enough from what I can see, MODE_CUR[5] should be the refresh rate of the screen instead of the aspect ratio.

Edible

Solved?

The problem was that the pi4 has 2 "connected" outputs (given by xrandrs output), this means that the MODE_CUR array is increased by one (HDMI-1 HDMI-2), and MODE_CUR[5] becomes aspect ratio instead of being the refresh rate, my solution basically looks for /primary/ instead of /connected/... but no clue if that will mess things up for others.

runcommand.sh
runcommand.sh.diff