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FAQ - Workarounds

Introduction

Some of the annoying little bugs (paper cuts) in Lubuntu are on the list of things to be sorted out. Many have been addressed in later releases of Lubuntu and backported to earlier versions, but some paper-cuts persist. As most of these involve the use of the command line, if you are new to it, please do have a read of LXterminal. When you see

some instructions

That means you need to type them into LXterminal.

14.02, 15.04 (Trusty Thar and Vivid Vervet, respectively)

The latest Ubuntu (and Lubuntu) known bugs and respective workarounds.

13.10 (Saucy Salamander) known bugs and workarounds

The latest Ubuntu 13.10 known bugs and workarounds (Lubuntu 13.10 included).


Guides

If you cannot find your issue listed here, please also check Guides for additional information.


Try Lubuntu without installation from the Live-CD

[Ed.: refers to non-released version of Lubuntu] There is a problem (bug) using the 'Try Lubuntu' option, please see this post on Lubuntu One Stop Thread - for a work-around.


Lubuntu Software Center not working

[Ed.: refers to non-released version of Lubuntu] This shows itself as when you select Lubuntu Software Center from the menu, nothing happens. To confirm that the problem you are having is the known problem, please carry out the following.

lubuntu-software-center

If you get a lot of errors regarding python then please carry out the following

rm -r ~/.config/lsc

That will force Lubuntu Software Center to rebuild next time you start it from the menu (it may take a little while to rebuild).


Lubuntu Netbook not launching

There is a reported bug, lxdm cannot handle a 'space' between the two words.

sudo cp /usr/share/xsessions/Lubuntu-Netbook.desktop /usr/share/xsessions/Lubuntu-Netbook2.desktop
gksudo leafpad /usr/share/xsessions/Lubuntu-Netbook2.desktop

Remove the space in Name: (Lubuntu Netbook to make it LubuntuNetbook). Reboot, and start LubuntuNetbook session instead of Lubuntu Netbook

It should work until we have a real fix.

UNTESTED: You could also try putting it in quotes, like "Lubuntu Netbook".

Please report on the <lubuntu DASH users AT lists DOT ubuntu DOT com> if this solution works.


Windows partition does not show up in GRUB

Note: This issue existed in 10.10 but should no longer occur in Lubuntu 11.04 and later releases.

sudo apt-get install os-prober
sudo os-prober
sudo update-grub


Windows share does not show up in PCManFM

Note: This issue existed in 10.10 but should no longer occur in Lubuntu 11.04 and later releases.

sudo apt-get install gvfs-backends
restart PCManFM


Problems with Abiword

This is a known bug. There is a workaround available from here.


LXPanel disappeared and after lauching lxpanel again, it looks ugly.

lxpanel --profile Lubuntu

Note: The command above is case sensitive!


When clicking in Chromium "Show in Folder" it spawns a new tab that shows only directory listing

gksudo leafpad /usr/bin/xdg-open

replace following lines in the end

    generic)
    open_generic "$url"
    ;;

with lines:

    generic)
    open_lxde "$url"
    ;;


After upgrade to Lubuntu 11.04 Natty, my keyboard layout changed

gksudo leafpad /etc/default/keyboard

replace

XKBMODEL="a4techKB21"
XKBLAYOUT="us,af"
XKBVARIANT=""
XKBOPTIONS=""

to

XKBMODEL="a4techKB21"
XKBLAYOUT="fi"
XKBVARIANT=""
XKBOPTIONS="terminate:ctrl_alt_bksp"

replace fi with your desired language, de,uk,it, you name it.

and then reboot your computer, as restarting udev service doesn't change it.

sudo reboot


Screen resolution is wrong, no matter what I do

Moved to https://help.ubuntu.com/community/Lubuntu/Monitor_or_Screens


Intel eeprom100 gives in dmesg: e100 0000:02:08.0: (unregistered net_device) EEPROM corrupted

sudo bash -c ‘echo “options e100 eeprom_bad_csum_allow=1″ >> /etc/modprobe.d/options’


Lubuntu will not install in less than 5.3 / 4.3 GB of disk space

Lubuntu 11.10

Please use the Alternate iso.


Lubuntu 11.04

This is a known issue with the Ubiquity installer on the official Lubuntu 11.04 ISO. It affected Xubuntu similarly. A very unofficial quick fix by one of the Lubuntu developers, which allows installation in 2.7GB or more of disk space, is at Minimal Disk Space.


Mouse Control crashes in 11.04

This is a known issue in the v4 of lxinput, until the v5 is available by the normal update route please do the following.

sudo apt-add-repository ppa:lubuntu-dev/staging
sudo apt-get update
sudo apt-get install lxinput
sudo apt-add-repository -r ppa:lubuntu-dev/staging
sudo apt-get update

This will 'grab' the v5 from the 11.10 test area and then return all updates to 11.04. This bug does not effect 11.10 or later releases.


Video Tearing

Moved to Lubuntu/Video


Vim has unreadable colors in LXTerminal

Moved to [[https://help.ubuntu.com/community/Lubuntu/Documentation/LXTerminal/Customising]


Can't Change to Screen Resolution I need For My Monitor or Laptop Screen

Moved to https://help.ubuntu.com/community/Lubuntu/Monitor_or_Screens


Entire disk with encryption doesn't prompt for disk password

If you install LVM entire disk encryption, you may encounter the bug where you are not prompted for your password on bootup. Without this password, the system cannot decrypt your drive, and will not continue booting. This is only a problem for certian graphics cards.

Workarounds for this bug:

1) When you land at the blank screen (it is waiting for your LVM encryption password) just type your password. Alternatively, hit one of the up/down arrow keys to get to the GUI and enter your password (you will need to hit backspace twice to remove the two characters that were put in by the one arrow key press)

2) Edit your /boot/grub/grub.cfg file. In the menu entry for the kernel you wish to boot, add the text "plymouth:force-drm" (without the quotes) to the end of the line that starts with "linux /boot/vmzlinux-3.2.....". If you do this workaround, you will need to re-apply this fix anytime the kernel package is updated or grub is otherwise modified as the file is completely re-written each time.

3) Use the un-modified kernel. Read: https://wiki.ubuntu.com/KernelMainlineBuilds to manually download a mainline kernel and install on your system.


Taskbar or LxPanel Background is the wrong color

If you don't set the opacity of LxPanel, in the appearance tab (under LxPanel Settings) It doesn't look right. On the color chooser, you can set the color to non-transparent.


My machine doesn't remember brightness settings

Moved to https://help.ubuntu.com/community/Lubuntu/Monitor_or_Screens

Unmanaged Wired Network in 10.10 and maybe 10.04

If Network Manager reports that your ethernet (wired) connection is un-managed, or you don't see the Network Manager applet icon at all, there are two solutions possible detailed below. Feel free to choose any.

The technical details may be found in Debian Wiki and this bug description.

Edit /etc/network/interfaces

Start an LXTerminal session, then issue:

sudo /etc/init.d/networking stop
gksudo leafpad /etc/network/interfaces

Remove or comment the two lines under "The primary network interface". You should get something like:

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface -- or you can completely remove this line --
#auto eth0                      -- or you can completely remove this line --
#iface eth0 inet dhcp           -- or you can completely remove this line --

Save and Quit.

Get back to LXTerminal and issue:

sudo service networking start
sudo service network-manager restart

After a short while you should see "Connection established" message above the Network Manager applet tray icon.

Change Network Manager settings

Start an LXTerminal session, then issue:

gksudo leafpad /etc/NetworkManager/nm-system-settings.conf

In section [ifupdown] find the line managed=false and replace it with managed=true. Save and quit.

Get back to LXTerminal and issue:

sudo service network-manager restart

After a short while you should see "Connection established" message above the Network Manager applet tray icon.

Lubuntu/Documentation/FAQ/Workarounds (last edited 2016-10-15 05:34:41 by walterorlin)