A500 LUbuntu 14.04 - v1

Linux development for the Acer A500/A501

Re: A500 LUbuntu 14.04 - v1

Postby digetx » 08 Jun 2015, 18:54

Don't forget to backup your CPUID and BCT from recovery, so you could recover a bit more easily if everything will get completely screwed. However I never bricked it, don't know how unbrick process may go (especially with my lossy mini USB port).
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Re: A500 LUbuntu 14.04 - v1

Postby digetx » 08 Jun 2015, 19:23

CptnChristo » 08 Jun 2015, 18:27 wrote:It may be that this is the end of the road for my A500. If so, I'd still like to thank you guys for the help. At a minimum, the CWM and CyanogenMod 7 ROM extended the life of the tablet longer than I'd ever expected.

I don't understand why people abandon relatively old devices. A500 still have good potential... good CPU power, good battery life, playing all my media and lots of stuff for tinkering :)
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Re: A500 LUbuntu 14.04 - v1

Postby CptnChristo » 08 Jun 2015, 20:09

I'll search for the bootloader.

There may have been some misunderstanding in my post though. The "end of the road" was from the perspective that my A500 doesn't do anything anymore--not that it doesn't have useful hardware. I was trying to install Lubuntu after all! :)

If I'm not smart enough to fix the checksum errors, then my A500 has reached retirement... unless displaying red text becomes useful somehow. :D
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Re: A500 LUbuntu 14.04 - v1

Postby freightyard » 08 Jun 2015, 21:13

If you can get into recovery
hold volume - button and press power button for 3-4 secs then release power button first.
in the new recovery first write down your cpuid that is displayed - you might need it.
in recovery/settings make sure zip file signature verification is unchecked.
If all that fails then you can do this procedure as long as you have a valid cpuid.
viewtopic.php?f=8&t=1942#p54997
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Re: A500 LUbuntu 14.04 - v1

Postby CptnChristo » 09 Jun 2015, 00:52

Nah.

Attempting recovery gives:
Erasing Cache before SD update...

SD update cmd:recovery
--update_package=SDCARD:update.zip

Secure boot: image SOS checksum fail!


Attempting normal boot gives:
Secure boot: image LNX checksum fail!


No activity in either case after the checksum failure messages.

ADB does not detect any device when the tablet is connected to my desktop by USB cable.

I assume the only option is to setup a microsd card with an "update.zip" as implied by the recovery message. But I'm taking a step back for a moment before I try attacking the problem again.
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Re: A500 LUbuntu 14.04 - v1

Postby freightyard » 09 Jun 2015, 01:39

sounds like a total stock recovery/bootloader situation
you need to read up on xda about installing an euu or update zip
also you need to read up on installing acer drivers on your pc.
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Re: A500 LUbuntu 14.04 - v1

Postby CptnChristo » 09 Jun 2015, 02:46

Yeah, I'll go snoop around xda in a day or two.

My desktop is Arch. I'll look for A500 drivers as well, but I'm 90% sure I'd been able to communicate with the tablet before. Then again, I could be confusing the A500 with some other device I connected through ADB in the past. Memory can play tricks on you sometimes.

Looking back on the failed install process, I have to assume my reboot was the iceberg that sunk my A500. After the "finished-enjoy" screen, I tapped next and was shown a "slide to unlock" screen with some console text output in the background. I'd assumed that was output from the install script--to be ignored. Now I realize it was probably the beginning of the "setup" phase. Ah well.
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Re: A500 LUbuntu 14.04 - v1

Postby digetx » 09 Jun 2015, 23:56

Btw, I'm using Arch on A500 for quite long time and very pleased :)
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Re: A500 LUbuntu 14.04 - v1

Postby digetx » 26 Jul 2015, 19:16

Right mouse click emulation (long press) tip: Add to /etc/X11/xorg.conf:
Code: Select all
Section "InputClass"
  Identifier "calibration"
  Driver "evdev"
  #MatchProduct "Atmel maXTouch Touchscreen"
  MatchProduct "atmel-maxtouch"
  Option "EmulateThirdButton" "1"
  Option "EmulateThirdButtonTimeout" "750"
  Option "EmulateThirdButtonMoveThreshold" "30"
EndSection


If there is no mouse cursor with opensource drm driver, add this to /etc/X11/xorg.conf:
Code: Select all
Section "Device"
  Identifier "fbdev"
  Option "SWCursor" "on"
EndSection
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Re: A500 LUbuntu 14.04 - v1

Postby saturn » 26 Sep 2015, 08:39

Dear Board,

this is my first post, so I want to say thank you to all the people which made this possible. It's amazing that there is still so much effort to support the device and the people using it.

I have a A500, boot loader V9 and TWRP with A5X extension. I'm running ubuntu 14.04 from sd card and with the thors kernel in second boot partition everything is fine.I'm trying to get the downstream kernel with support for proprietary nvidia driver to work. Kernel is in flexrom an rootfs on sdcard (first partition) and command line is the one mentioned in the kernle installation zip-file.

Problem
Kernel and cpio are booting fine and rootfs is beeing found. Login screen shows up and then the system freezes. No input via touchscreen possible and no wireless lan. In the syslog is nothing "unusual".

What can I do to find the error? Should I change the command line parameters?

Any help is appreciated.

Regards

Alexander
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Re: A500 LUbuntu 14.04 - v1

Postby digetx » 26 Sep 2015, 13:43

Hello Alexander, could you clarify the following:

  • Does stock kernel that come with ROM has same issue?
  • What kernel version you are trying and have you tried different versions?
  • Is it vanilla ubuntu install? Have you intalled updates, any packages or changed any config?
  • Is it DM(display manager) login screen or kernel terminal?
  • If DM: Would freeze happen if you switch to VT(virtual terminal ctrl+alt+F1) and stay there before/on login screen appear? And would it freeze once you switch back to DM(ctrl+alt+F7, or F2)?
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Re: A500 LUbuntu 14.04 - v1

Postby tmahbub » 03 Nov 2015, 09:03

sorry for asking a really novice question. but how do i rename rootfs??
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Re: A500 LUbuntu 14.04 - v1

Postby digetx » 03 Nov 2015, 16:50

tmahbub, could you explain what you are meaning by "rename rootfs"?
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Re: A500 LUbuntu 14.04 - v1

Postby tmahbub » 03 Nov 2015, 23:50

In the installation instruction the second step is 'rename rootfs to lubuntu-14.04-a500.tar.gz.' How do I do it? Through root explorer or terminal??
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Re: A500 LUbuntu 14.04 - v1

Postby digetx » 03 Nov 2015, 23:56

Just rename downloaded file on your PC. "lubuntu-14.04-a500-v1t2.tar.gz" --> "lubuntu-14.04-a500.tar.gz"
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