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First of all, removing "obsolete" answers isn't a good idea. You'd be surprised that there are many regular users as well as actually legitimate enterprise level organizations that use older versions of Ubuntu, nevermind older versions of Linux kernel in general. Those answers can be useful for them. If all "obsolete" answers are removed, you'll see whole lot of users coming here asking about their outdated OS issues, and we've nothing to provide except close-vote. So unless StackOverflow decides that obsolete answers will cost them too much in hamsters , those answers probably should remain on the site.

There are however several ways that you can address the issue:

• leave a comment; chances are the answer author is still around and active user on the site, so there's a good chance they'll update the post.
• Edit the post to add newer information. Be careful here though - adding lengthy procedures and/or scrips will go against that user's original intention and could be considered as a destructive edit
• Post your own answer with bold text stating that your answer is for specific Ubuntu version or range of Ubuntu versions since particular one. This is a very very common approach , and I'd personally recommend it.
• Ask a new question ! Duplicate questions that require newer information/updated solutions are perfectly acceptable on the site. Just put in bold text to let people not to close your question as duplicate since older answers don't work. (admittedly there's a problem with hot-headed users who like to close all the things, but if you leave several hundred comments, flag for moderator to come over and yell at the "kids", or simply put everything in bold and italics, then you can save the question ).

See for example this answer: http://askubuntu.com/a/19324/295286 It keeps all the original content, while also provides updated information for systems 15.04 and above. It takes effort to write something this consistent and detailed with every new release. Now multiply that effort times a thousand, because there's thousands of great answers like this. Sure, they might be dated, but again - easily solvable with posts being updated or by posting your own answer to address the void

First of all, removing "obsolete" answers isn't a good idea. You'd be surprised that there are many regular users as well as actually legitimate enterprise level organizations that use older versions of Ubuntu, nevermind older versions of Linux kernel in general. Those answers can be useful for them. If all "obsolete" answers are removed, you'll see whole lot of users coming here asking about their outdated OS issues, and we've nothing to provide except close-vote. So unless StackOverflow decides that obsolete answers will cost them too much in hamsters , those answers probably should remain on the site.

There are however several ways that you can address the issue:

• leave a comment; chances are the answer author is still around and active user on the site, so there's a good chance they'll update the post.
• Edit the post to add newer information. Be careful here though - adding lengthy procedures and/or scrips will go against that user's original intention and could be considered as a destructive edit
• Post your own answer with bold text stating that your answer is for specific Ubuntu version or range of Ubuntu versions since particular one. This is a very very common approach , and I'd personally recommend it.
• Ask a new question ! Duplicate questions that require newer information/updated solutions are perfectly acceptable on the site. Just put in bold text to let people not to close your question as duplicate since older answers don't work. (admittedly there's a problem with hot-headed users who like to close all the things, but if you leave several hundred comments, flag for moderator to come over and yell at the "kids", or simply put everything in bold and italics, then you can save the question ).

See for example this answer: https://askubuntu.com/a/19324/295286 It keeps all the original content, while also provides updated information for systems 15.04 and above. It takes effort to write something this consistent and detailed with every new release. Now multiply that effort times a thousand, because there's thousands of great answers like this. Sure, they might be dated, but again - easily solvable with posts being updated or by posting your own answer to address the void

First of all, removing "obsolete" answers isn't a good idea. You'd be surprised that there are many regular users as well as actually legitimate enterprise level organizations that use older versions of Ubuntu, nevermind older versions of Linux kernel in general. Those answers can be useful for them. If all "obsolete" answers are removed, you'll see whole lot of users coming here asking about their outdated OS issues, and we've nothing to provide except close-vote. So unless StackOverflow decides that obsolete answers will cost them too much in hamsters , those answers probably should remain on the site.

There are however several ways that you can address the issue:

• leave a comment; chances are the answer author is still around and active user on the site, so there's a good chance they'll update the post.
• Edit the post to add newer information. Be careful here though - adding lengthy procedures and/or scrips will go against that user's original intention and could be considered as a destructive edit
• Post your own answer with bold text stating that your answer is for specific Ubuntu version or range of Ubuntu versions since particular one. This is a very very common approach , and I'd personally recommend it.
• Ask a new question ! Duplicate questions that require newer information/updated solutions are perfectly acceptable on the site. Just put in bold text to let people not to close your question as duplicate since older answers don't work. (admittedly there's a problem with hot-headed users who like to close all the things, but if you leave several hundred comments, flag for moderator to come over and yell at the "kids", or simply put everything in bold and italics, then you can save the question ).

See for example this answer: http://askubuntu.com/a/19324/295286 It keeps all the original content, while also provides updated information for systems 15.04 and above. It takes effort to write something this consistent and detailed with every new release. Now multiply that effort times a thousand, because there's thousands of great answers like this. Sure, they might be dated, but again - easily solvable with posts being updated or by posting your own answer to address the void

First of all, removing "obsolete" answers isn't a good idea. You'd be surprised that there are many regular users as well as actually legitimate enterprise level organizations that use older versions of Ubuntu, nevermind older versions of Linux kernel in general. Those answers can be useful for them. If all "obsolete" answers are removed, you'll see whole lot of users coming here asking about their outdated OS issues, and we've nothing to provide except close-vote. So unless StackOverflow decides that obsolete answers will cost them too much in hamsters , those answers probably should remain on the site.

There are however several ways that you can address the issue:

• leave a comment; chances are the answer author is still around and active user on the site, so there's a good chance they'll update the post.
• Edit the post to add newer information. Be careful here though - adding lengthy procedures and/or scrips will go against that user's original intention and could be considered as a destructive edit
• Post your own answer with bold text stating that your answer is for specific Ubuntu version or range of Ubuntu versions since particular one. This is a very very common approach , and I'd personally recommend it.
• Ask a new question ! Duplicate questions that require newer information/updated solutions are perfectly acceptable on the site. Just put in bold text to let people not to close your question as duplicate since older answers don't work. (admittedly there's a problem with hot-headed users who like to close all the things, but if you leave several hundred comments, flag for moderator to come over and yell at the "kids", or simply put everything in bold and italics, then you can save the question ).

See for example this answer: http://askubuntu.com/a/19324/295286 It keeps all the original content, while also provides updated information for systems 15.04 and above. It takes effort to write something this consistent and detailed with every new release. Now multiply that effort times a thousand, because there's thousands of great answers like this. Sure, they might be dated, but again - easily solvable with posts being updated or by posting your own answer to address the void

First of all, removing "obsolete" answers isn't a good idea. You'd be surprised that there are many regular users as well as actually legitimate enterprise level organizations that use older versions of Ubuntu, nevermind older versions of Linux kernel in general. Those answers can be useful for them. If all "obsolete" answers are removed, you'll see whole lot of users coming here asking about their outdated OS issues, and we've nothing to provide except close-vote. So unless StackOverflow decides that obsolete answers will cost them too much in hamsters , those answers probably should remain on the site.

There are however several ways that you can address the issue:

• leave a comment; chances are the answer author is still around and active user on the site, so there's a good chance they'll update the post.
• Edit the post to add newer information. Be careful here though - adding lengthy procedures and/or scrips will go against that user's original intention and could be considered as a destructive edit
• Post your own answer with bold text stating that your answer is for specific Ubuntu version or range of Ubuntu versions since particular one. This is a very very common approach , and I'd personally recommend it.
• Ask a new question ! Duplicate questions that require newer information/updated solutions are perfectly acceptable on the site. Just put in bold text to let people not to close your question as duplicate since older answers don't work. (admittedly there's a problem with hot-headed users who like to close all the things, but if you leave several hundred comments, flag for moderator to come over and yell at the "kids", or simply put everything in bold and italics, then you can save the question ).

First of all, removing "obsolete" answers isn't a good idea. You'd be surprised that there are many regular users as well as actually legitimate enterprise level organizations that use older versions of Ubuntu, nevermind older versions of Linux kernel in general. Those answers can be useful for them. If all "obsolete" answers are removed, you'll see whole lot of users coming here asking about their outdated OS issues, and we've nothing to provide except close-vote. So unless StackOverflow decides that obsolete answers will cost them too much in hamsters , those answers probably should remain on the site.

There are however several ways that you can address the issue:

• leave a comment; chances are the answer author is still around and active user on the site, so there's a good chance they'll update the post.
• Edit the post to add newer information. Be careful here though - adding lengthy procedures and/or scrips will go against that user's original intention and could be considered as a destructive edit
• Post your own answer with bold text stating that your answer is for specific Ubuntu version or range of Ubuntu versions since particular one. This is a very very common approach , and I'd personally recommend it.
• Ask a new question ! Duplicate questions that require newer information/updated solutions are perfectly acceptable on the site. Just put in bold text to let people not to close your question as duplicate since older answers don't work. (admittedly there's a problem with hot-headed users who like to close all the things, but if you leave several hundred comments, flag for moderator to come over and yell at the "kids", or simply put everything in bold and italics, then you can save the question ).

See for example this answer: http://askubuntu.com/a/19324/295286 It keeps all the original content, while also provides updated information for systems 15.04 and above. It takes effort to write something this consistent and detailed with every new release. Now multiply that effort times a thousand, because there's thousands of great answers like this. Sure, they might be dated, but again - easily solvable with posts being updated or by posting your own answer to address the void