MobileRead Forums - View Single Post - Can't install w/o computer crashing. manual power cycle required

ScottRKahler · 07-03-2018, 10:51 PM

Steps performed
1. installed Calibre from the repository.
got "QGtkStyle could not resolve GTK"

2. Reinstalled ubuntu from a fresh iso
Added ssh and TightVNC

3. looked at the install instructions.

4. Started to check for libraries and versions.

5. installed locate to assist with looking.

6. completed libraries and versions - all where above the minimum versions.

7. Installed using sudo -v && wget -nv -O- https://download.calibre-ebook.com/linux-installer.sh | sudo sh /dev/stdin. install was successful.

8. ran: scott@scott-desktop:~$ Calibre
Received: QGtkStyle could not resolve GTK. Make sure you have installed the proper libraries. Then system froze. I needed to unplug the power from the system to restart it.

9. Checked Forum:
found "https://www.mobileread.com/forums/showthread.php?t=296118&highlight=QGtkStyle+GTK+li braries."
tried sudo calibre
system froze - must unplug from wall outlet.

10. checked "https://bugs.launchpad.net/calibre/+bug/1740020"
found: I'm using Ubutun 17.10 mate, I have the same issue. Changing the environment variable did not work.

peter@Talesian:/opt/calibre/bin$ CALIBRE_USE_SYSTEM_THEME=1 calibre
QGtkStyle could not resolve GTK. Make sure you have installed the proper libraries.

peter@Talesian:/opt/calibre/bin$ CALIBRE_USE_SYSTEM_THEME=0 calibre
QGtkStyle could not resolve GTK. Make sure you have installed the proper libraries.

Kovid Goyal (kovid) wrote on 2018-04-07: #4
That value of the environment variable is irrelevant, calibre checks for its existence.

So this means I need to comment it out? I am not sure what to change and how to change it.

11.
checked: "https://manual.calibre-ebook.com/customize.html#environment-variables"
Found: CALIBRE_USE_SYSTEM_THEME - By default, on Linux, calibre uses its own builtin Qt style. This is to avoid crashes and hangs caused by incompatibilities between the version of Qt calibre is built against and the system Qt. The downside is that calibre may not follow the system look and feel. If you set this environment variable on Linux, it will cause calibre to use the system theme – beware of crashes and hangs.

12. ran ran env | grep CALIBRE and got no results.

13. uninstalled using scott@scott-desktop:~$ sudo calibre-uninstall.
it was removed

14. downloaded binary from: https://download.calibre-ebook.com/3...6.1-x86_64.txz
Ran sudo mkdir -p /opt/calibre && sudo rm -rf /opt/calibre/* && sudo tar xvf /home/scott/downloads/calibre-3.26.1-x86_64.txz -C /opt/calibre && sudo /opt/calibre/calibre_postinstall
Install completed

15. Ran Calibre
Got QGtkStyle could not resolve GTK. Make sure you have installed the proper libraries.
QGtkStyle could not resolve GTK. Make sure you have installed the proper libraries.
System froze again. removed power

I have not the details of my steps saved if you need them. I am at a loss. I don't know what to do. I am pretty confident I did everything correctly. However, I am kind of new with Linux. I don' know how to change, check or set Environment Variables. I love this software so much. It is very turnkey on windows but I would like for it to be on my linux box. I have gotten it to work in previous versions of linux, 16.04, I think, maybe. Any help would be thankful.

07-03-2018, 10:51 PM	#1
ScottRKahler Member Posts: 10 Karma: 10 Join Date: Jul 2018 Device: Moon Reader Pro	Can't install w/o computer crashing. manual power cycle required Steps performed 1. installed Calibre from the repository. got "QGtkStyle could not resolve GTK" 2. Reinstalled ubuntu from a fresh iso Added ssh and TightVNC 3. looked at the install instructions. 4. Started to check for libraries and versions. 5. installed locate to assist with looking. 6. completed libraries and versions - all where above the minimum versions. 7. Installed using sudo -v && wget -nv -O- https://download.calibre-ebook.com/linux-installer.sh \| sudo sh /dev/stdin. install was successful. 8. ran: scott@scott-desktop:~$ Calibre Received: QGtkStyle could not resolve GTK. Make sure you have installed the proper libraries. Then system froze. I needed to unplug the power from the system to restart it. 9. Checked Forum: found "https://www.mobileread.com/forums/showthread.php?t=296118&highlight=QGtkStyle+GTK+li braries." tried sudo calibre system froze - must unplug from wall outlet. 10. checked "https://bugs.launchpad.net/calibre/+bug/1740020" found: I'm using Ubutun 17.10 mate, I have the same issue. Changing the environment variable did not work. peter@Talesian:/opt/calibre/bin$ CALIBRE_USE_SYSTEM_THEME=1 calibre QGtkStyle could not resolve GTK. Make sure you have installed the proper libraries. peter@Talesian:/opt/calibre/bin$ CALIBRE_USE_SYSTEM_THEME=0 calibre QGtkStyle could not resolve GTK. Make sure you have installed the proper libraries. Kovid Goyal (kovid) wrote on 2018-04-07: #4 That value of the environment variable is irrelevant, calibre checks for its existence. So this means I need to comment it out? I am not sure what to change and how to change it. 11. checked: "https://manual.calibre-ebook.com/customize.html#environment-variables" Found: CALIBRE_USE_SYSTEM_THEME - By default, on Linux, calibre uses its own builtin Qt style. This is to avoid crashes and hangs caused by incompatibilities between the version of Qt calibre is built against and the system Qt. The downside is that calibre may not follow the system look and feel. If you set this environment variable on Linux, it will cause calibre to use the system theme – beware of crashes and hangs. 12. ran ran env \| grep CALIBRE and got no results. 13. uninstalled using scott@scott-desktop:~$ sudo calibre-uninstall. it was removed 14. downloaded binary from: https://download.calibre-ebook.com/3...6.1-x86_64.txz Ran sudo mkdir -p /opt/calibre && sudo rm -rf /opt/calibre/* && sudo tar xvf /home/scott/downloads/calibre-3.26.1-x86_64.txz -C /opt/calibre && sudo /opt/calibre/calibre_postinstall Install completed 15. Ran Calibre Got QGtkStyle could not resolve GTK. Make sure you have installed the proper libraries. QGtkStyle could not resolve GTK. Make sure you have installed the proper libraries. System froze again. removed power I have not the details of my steps saved if you need them. I am at a loss. I don't know what to do. I am pretty confident I did everything correctly. However, I am kind of new with Linux. I don' know how to change, check or set Environment Variables. I love this software so much. It is very turnkey on windows but I would like for it to be on my linux box. I have gotten it to work in previous versions of linux, 16.04, I think, maybe. Any help would be thankful.