[SOLVED] KDE neon: alloc magic number error

cosmon · 02-09-2020, 05:29 AM

Hello fellow users,
I am trying to boot from my neon usb but I get an error along the lines of:
"error: invalid magic number Alloc magic is broken at 0x7860ada0: 78491020. Aborted. Press any key to exit"

I have verified my neon sha256sum, so I don't think it's the iso.

If it is relevant here is the command I used to create the usb (on Linux Mint 19.3 Tricia Cinnamon)
sudo dd bs=4M if=~/Downloads/neon-user-20200207-1737.iso of=/dev/sdb status=progress && sync
dd was executed successfully but I still cannot boot.
Any help?

cosmon · 02-10-2020, 10:04 AM

It has been over 24 hours, any help would be appreciated.

mrmazda · 02-10-2020, 11:07 AM

What do you see before "error: invalid magic number Alloc magic is broken"?

What hardware is your 19.3 installed on?

Code:

inxi -bxxza

output pasted here using code tags would show us relevant specifications.

You might try leaving bs=4M out of your burn. Just let dd decide how best to do its job.

cosmon · 02-11-2020, 07:12 AM

Thank you for the response.

Unfortunately eliminating bs=4M did not help, I ended up with the same error. I don't see anything special, just the normal grub bootloader. If I choose an option it will return me with the error.

Here is the output of inxi -bxxza:

Code:

System:
  Host: lenny Kernel: 5.3.0-28-generic x86_64 bits: 64 compiler: gcc 
  v: 7.4.0 Desktop: Cinnamon 4.4.8 wm: muffin dm: LightDM 
  Distro: Linux Mint 19.3 Tricia base: Ubuntu 18.04 bionic 
Machine:
  Type: Laptop System: LENOVO product: 80E4 v: Lenovo G40-80 
  serial: <filter> Chassis: type: 10 v: Lenovo G40-80 serial: <filter> 
  Mobo: LENOVO model: Lenovo G40-80 v: 31900059WIN serial: <filter> 
  UEFI: LENOVO v: B0CN40WW date: 06/20/2014 
Battery:
  ID-1: BAT0 charge: 32.1 Wh condition: 32.1/37.6 Wh (85%) volts: 16.2/14.4 
  model: Lenovo IdeaPad serial: <filter> status: Full 
  Device-1: hidpp_battery_0 model: Logitech Wireless Mouse M275/M280 
  serial: <filter> charge: 55% status: Discharging 
CPU:
  Dual Core: Intel Core i5-5200U type: MT MCP arch: Broadwell 
  speed: 1263 MHz min/max: 500/2700 MHz 
Graphics:
  Device-1: Intel HD Graphics 5500 vendor: Lenovo driver: i915 v: kernel 
  bus ID: 00:02.0 chip ID: 8086:1616 
  Device-2: AMD Sun LE [Radeon HD 8550M / R5 M230] vendor: Lenovo 
  driver: radeon v: kernel bus ID: 04:00.0 chip ID: 1002:666f 
  Display: x11 server: X.Org 1.20.5 driver: ati,modesetting,radeon 
  unloaded: fbdev,vesa resolution: 1366x768~60Hz 
  OpenGL: renderer: Mesa DRI Intel HD Graphics 5500 (Broadwell GT2) 
  v: 4.5 Mesa 19.2.8 compat-v: 3.0 direct render: Yes 
Network:
  Device-1: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet 
  vendor: Lenovo driver: r8169 v: kernel port: 4000 bus ID: 02:00.0 
  chip ID: 10ec:8168 
  Device-2: Intel Wireless 3160 driver: iwlwifi v: kernel port: 4000 
  bus ID: 03:00.0 chip ID: 8086:08b4 
Argument "20200207-17:58" isn't numeric in numeric eq (==) at /usr/bin/inxi line 11407.
Use of uninitialized value within @row in pattern match (m//) at /usr/bin/inxi line 11447.
Drives:
  Local Storage: total: 935.42 GiB used: 109.31 GiB (11.7%) 
Info:
  Processes: 233 Uptime: 54m Memory: 5.72 GiB used: 1.49 GiB (26.1%) 
  Init: systemd v: 237 runlevel: 5 Compilers: gcc: 7.4.0 alt: 7 Shell: bash 
  v: 4.4.20 running in: gnome-terminal inxi: 3.0.32

cosmon · 02-11-2020, 08:45 AM

SOLVED: Simply a bad USB. Used another one and it worked fine. Sorry for the wasted time.

mrmazda · 02-11-2020, 08:52 AM

I'm just guessing that your choice of .iso to download was broken and shouldn't have been presented for download. I'd try downloading and burning another.

It could be related to the presence of dual GPUs on the laptop. They are often troublesome to get installed on. I don't have any dual graphics laptops, so can't test my theories.

Also, AMD GPUs/APUs as new as yours are commonly unhappy to try to run on the ATI Xorg driver.

If you have access to a USB DVD drive, I'd burn the iso to DVD to install from.

cosmon · 02-11-2020, 09:34 AM

Quote:

Originally Posted by mrmazda

I'm just guessing that your choice of .iso to download was broken and shouldn't have been presented for download. I'd try downloading and burning another.

It could be related to the presence of dual GPUs on the laptop. They are often troublesome to get installed on. I don't have any dual graphics laptops, so can't test my theories.

Also, AMD GPUs/APUs as new as yours are commonly unhappy to try to run on the ATI Xorg driver.

If you have access to a USB DVD drive, I'd burn the iso to DVD to install from.

I solved this, explained in the previous reply.
If you were curious, the main reason I started believing the USB was at fault is when I tried to create the usb in etcher it failed the integrity check. Somehow I got a blank USB hard drive working and I know how to reset it to fat32 post installation so i'll do that.

I'm not sure about the dual gpu theory considering I got mint working absolutely fine, no compatibility or nomodset required.

I think this forum is great and will get back on this when I have questions about linux (hopefully an a kde neon system :P).
Thank you SO much!