5

Duplicate?

In the linked question I've posted my sources.list and it was deemed nothing out of the ordinary. So how could my question be a duplicate of fixing sources.list? How is that even remotely helpful?

Original question:

I installed steam from their website. Steam wants to install a bunch of packages, and stops with this error:

Steam needs to install these additional packages:
libc6:amd64 libc6:i386 libegl1:amd64 libegl1:i386 libgbm1:amd64 libgbm1:i386 libgl1-mesa-dri:amd64 libgl1-mesa-dri:i386 libgl1:amd64 libgl1:i386 steam-libs-amd64:amd64 steam-libs-i386:i386

Press return to proceed with the installation: 
......
Reading package lists... Done
Building dependency tree

Reading state information... Done
libegl1 is already the newest version (1.3.2-1~ubuntu0.20.04.1).
libegl1 set to manually installed.
libgbm1 is already the newest version (21.0.3-0ubuntu0.3~20.04.5).
libgbm1 set to manually installed.
libgl1 is already the newest version (1.3.2-1~ubuntu0.20.04.1).
libgl1 set to manually installed.
libgl1-mesa-dri is already the newest version (21.0.3-0ubuntu0.3~20.04.5).
libgl1-mesa-dri set to manually installed.
libc6 is already the newest version (2.31-0ubuntu9.3).
libc6 set to manually installed.
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:


The following packages have unmet dependencies:
 libc6 : Breaks: libc6:i386 (!= 2.31-0ubuntu9.3) but 2.31-0ubuntu9.2 is to be installed
 libc6:i386 : Breaks: libc6 (!= 2.31-0ubuntu9.2) but 2.31-0ubuntu9.3 is to be installed
E: Unable to correct problems, you have held broken packages.

Installing libc6-386 manually did not work either:

$ sudo apt install libc6-i386
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 libc6-i386 : Depends: libc6 (= 2.31-0ubuntu9.2) but 2.31-0ubuntu9.3 is to be installed
E: Unable to correct problems, you have held broken packages.

Update:

$ apt policy libc6
libc6:
  Installed: 2.31-0ubuntu9.3
  Candidate: 2.31-0ubuntu9.3
  Version table:
 *** 2.31-0ubuntu9.3 100
        100 /var/lib/dpkg/status
     2.31-0ubuntu9.2 500
        500 http://mx.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
     2.31-0ubuntu9 500
        500 http://mx.archive.ubuntu.com/ubuntu focal/main amd64 Packages
$ apt policy libc6-i386
libc6-i386:
  Installed: (none)
  Candidate: 2.31-0ubuntu9.2
  Version table:
     2.31-0ubuntu9.2 500
        500 http://mx.archive.ubuntu.com/ubuntu focal-updates/main amd64 Packages
     2.31-0ubuntu9 500
        500 http://mx.archive.ubuntu.com/ubuntu focal/main amd64 Packages
user1785730
  • 427

1 Answers1

3

N0rbert's comment brought me on the right track, but it still wanted to remove quite a list of packages:

$ sudo aptitude install libc6=2.31-0ubuntu9.2
The following packages will be DOWNGRADED:
  libc6 
0 packages upgraded, 0 newly installed, 1 downgraded, 0 to remove and 14 not upgraded.
Need to get 2 715 kB of archives. After unpacking 0 B will be used.
The following packages have unmet dependencies:
 libc6-dbg : Depends: libc6 (= 2.31-0ubuntu9.3) but 2.31-0ubuntu9.2 is to be installed
 libc6-dev : Depends: libc6 (= 2.31-0ubuntu9.3) but 2.31-0ubuntu9.2 is to be installed
The following actions will resolve these dependencies:

  Remove the following packages:                                                       



    

  1.  build-essential [12.8ubuntu1.1 (focal-updates, now)]                               

    

    2. 

  2.  g++ [4:9.3.0-1ubuntu2 (focal, now)]                                                

    

    3. 

  3.  g++-9 [9.3.0-17ubuntu1~20.04 (focal-security, focal-updates, now)]                 

    

    4. 

  4.  libboost-atomic1.71-dev [1.71.0-6ubuntu6 (focal, now)]                             

    

    5. 

  5.  libboost-chrono1.71-dev [1.71.0-6ubuntu6 (focal, now)]                             

    

    6. 

  6.  libboost-date-time1.71-dev [1.71.0-6ubuntu6 (focal, now)]                          

    

    7. 

  7.  libboost-filesystem-dev [1.71.0.0ubuntu2 (focal, now)]                             

    

    8. 

  8.  libboost-filesystem1.71-dev [1.71.0-6ubuntu6 (focal, now)]                         

    

    9. 

  9.  libboost-regex-dev [1.71.0.0ubuntu2 (focal, now)]                                  

    

    10. 

  10. libboost-regex1.71-dev [1.71.0-6ubuntu6 (focal, now)]                              

    

    11. 

  11. libboost-serialization1.71-dev [1.71.0-6ubuntu6 (focal, now)]                      

    

    12. 

  12. libboost-system1.71-dev [1.71.0-6ubuntu6 (focal, now)]                             

    

    13. 

  13. libboost-thread-dev [1.71.0.0ubuntu2 (focal, now)]                                 

    

    14. 

  14. libboost-thread1.71-dev [1.71.0-6ubuntu6 (focal, now)]                             

    

    15. 

  15. libboost1.71-dev [1.71.0-6ubuntu6 (focal, now)]                                    

    

    16. 

  16. libc6-dbg [2.31-0ubuntu9.3 (now)]                                                  

    

    17. 

  17. libc6-dev [2.31-0ubuntu9.3 (now)]                                                  

    

    18. 

  18. libexpat1-dev [2.2.9-1build1 (focal, now)]                                         

    

    19. 

  19. libfreetype-dev [2.10.1-2ubuntu0.1 (focal-security, focal-updates, now)]           

    

    20. 

  20. libfreetype6-dev [2.10.1-2ubuntu0.1 (focal-security, focal-updates, now)]          

    

    21. 

  21. libicu-dev [66.1-2ubuntu2.1 (focal-security, focal-updates, now)]                  

    

    22. 

  22. libjpeg-dev [8c-2ubuntu8 (focal, now)]                                             

    

    23. 

  23. libjpeg-turbo8-dev [2.0.3-0ubuntu1.20.04.1 (focal-security, focal-updates, now)]   

    

    24. 

  24. libjpeg8-dev [8c-2ubuntu8 (focal, now)]                                            

    

    25. 

  25. libncurses-dev [6.2-0ubuntu2 (focal, now)]                                         

    

    26. 

  26. libpng-dev [1.6.37-2 (focal, now)]                                                 

    

    27. 

  27. libpython3-dev [3.8.2-0ubuntu2 (focal, now)]                                       

    

    28. 

  28. libpython3.8-dev [3.8.10-0ubuntu1~20.04.1 (focal-security, focal-updates, now)]    

    

    29. 

  29. libstdc++-9-dev [9.3.0-17ubuntu1~20.04 (focal-security, focal-updates, now)]       

    

    30. 

  30. libtiff-dev [4.1.0+git191117-2ubuntu0.20.04.2 (focal-security, focal-updates, now)]

    

    31. 

  31. python3-dev [3.8.2-0ubuntu2 (focal, now)]                                          

    

    32. 

  32. python3.8-dev [3.8.10-0ubuntu1~20.04.1 (focal-security, focal-updates, now)]       

    

    33. 

  33. zlib1g-dev [1:1.2.11.dfsg-2ubuntu1.2 (focal-updates, now)]                         


    

    Leave the following dependencies unresolved:
    

    34. 

  34. dpkg-dev recommends build-essential                                                

    

    35. 

  35. gcc recommends libc6-dev | libc-dev                                                

    

    36. 

  36. cython3 recommends python3-dev                                                     

    

    37. 

  37. gcc-9 recommends libc6-dev (>= 2.13-0ubuntu6)                                      

    

    38. 

  38. gdb recommends libc-dbg                                                            

    

    39. 

  39. libgcc-9-dev recommends libc6-dev (>= 2.13-0ubuntu6)                               

    

    40. 

  40. libpython3.8-dev recommends libc6-dev | libc-dev                                   

    

    41. 

  41. python3.8-dev recommends libc6-dev | libc-dev                                      

    

    42. 

  42. python3-pip recommends build-essential                                             

    

    43. 

  43. python3-pip recommends python3-dev (>= 3.2)                                        

    

    44.

Thus I forced 2.31-0ubuntu9.2 for libc6-dev and libc6-dbg as well:

$ sudo aptitude install libc6=2.31-0ubuntu9.2 libc6-dev=2.31-0ubuntu9.2 libc6-dbg=2.31-0ubuntu9.2

This command ran smoothly. Steam works now.

One questions remains though: How did I mess this up? How did I end up with libc6=2.31-0ubuntu9.3 in the first place? Should I make a new question for this?

user1785730
  • 427