6 ms·

> ...but it happens more often than I would like that I update Linux (Ubuntu) and, lo and behold, I can't really use any programs until I reboot... Ubuntu deve

by rlpb 9y ago

> ...but it happens more often than I would like that I update Linux (Ubuntu) and, lo and behold, I can't really use any programs until I reboot... Ubuntu developer here. This doesn't happen to me in practice. Most updates don't cause system instability. I rarely reboot. Firefox is the most noticeable thing. After updating Firefox (usually it's a security update), Firefox often starts misbehaving until restarted. But I am very rarely forced to restart the login session or the entire system. I should, to get updates to actually take effect, but as a developer I'm usually aware of the specifics, so I can afford to be more selective than the average user. Are you sure you aren't comparing apples to oranges here, and are actually complaining about the stability of updates while running the development release, which involves ABIs changing and so forth?

mehrdadn 9y ago
Development release? Currently I'm on 16.04, and I've never been on a development release of anything on Ubuntu. I'm just describing the behavior I usually see in practice (which it seems someone attributed to "D-BUS" [1]). Obviously the logon session doesn't get messed up if all I'm updating is something irrelevant like Firefox, but if I update stuff that would actually affect system components then there's a good chance I'll have to reboot after the update or I'll start seeing weird behavior. This has generally been my experience ever since... any Ubuntu version, really. It's almost ironic that the most robust thing to update in practice is the OS kernel. [1] https://news.ycombinator.com/item?id=16257060 https://news.ycombinator.com/item?id=16257060
- rlpb 9y ago
  All I can say is that, based on everything I know, that's not the current experience of the majority of users, so it doesn't seem fair for you to generalize this to some architectural problem. I don't know if you unknowingly have some edge case setup or what.
  - mehrdadn 9y ago
    Are you reading the same comments I'm writing? I was literally point-by-point saying the opposite of what you seem to have read me writing: > You: All I can say is that, based on everything I know, that's not the current experience of the majority of users >> Me: Yet from everyone's comments here I'm guessing I must be the only one who encounters this. ??? > You: It doesn't seem fair for you to generalize this to some architectural problem. >> Me: I don't get why it happens in every instance, and there might be lots of different reasons in different instances. IPC mismatch is my best guess for a significant fraction of the incidents. ???
  - mehrdadn 9y ago
    Also, FYI, update: apparently I'm not the only person in the world experiencing this [1]. But we are the only 2 people in the world experiencing this, so never mind. [1] https://news.ycombinator.com/item?id=16257935 https://news.ycombinator.com/item?id=16257935
- beagle3 9y ago
  I have been running Ubuntu since 2004, and except for Firefox which tends to destabilize on update, I’ve observed this twice in 14 years; I update weekly or more often, and reboot every few months (usually on a kernel update I want to take hold)
  - mehrdadn 9y ago
    Maybe it's because you update often so there are fewer changes in between? I update far less frequently.. it's not my primary OS so it's not like I'm even on it every day (or week). I use it whenever I need to.
    - xfer 9y ago
      Have you filed any bug report or point to one? All i have seen is a lot of handwaving about "IPC mismatch", things will not fix itself unless people actively report/help fix issues.
Valmar 9y ago
Here, on Arch, Firefox updates don't cause me any grief. Only time I've ever need to reboot is after a kernel or DKMS module update. For systemd updates, I can just reload it. For the likes of core components like bash, and major DE updates, I can just lazily use loginctl to terminate all of my sessions, and start fresh. I'm not sure why Firefox would be causing instability until you restart (reboot?), though.
- postingatwork 9y ago
  Firefox with e10s enabled (all current releases) detects version differences between parent process and and a child process started at a later point in time. Until recently it aborted the entire browser when that happened. I think now they have some logic that tries to keep running with the already open processes and abandoning the incompatible child. Ideally they'd just prefork a template process for children and open fds for everything they need, that way such a detection wouldn't be necessary.
- rlpb 9y ago
  > I'm not sure why Firefox would be causing instability until you restart (reboot?), though. I get the impression that the UI loads files from disk dynamically, which start mismatching what was already loaded.
peterwwillis 9y ago
Ubuntu user here. Ubuntu is less stable than my second girlfriend, and she tried to stab me once. Lately, every time my co-worker has updated Ubuntu, it has broken his system. He's like my canary in the coalmine. I wait for his system to not fall over before I will update mine.
- StudentStuff 9y ago
  Maybe its time to consider an OS with better maintainers, like Debian. I've had less issues on unstable/sid over the past few years than I had on the last Ubuntu LTS release (which was what spurred me to Debian). On my other machine, Debian Stretch (and Jessie prior to upgrading) have treated me well, there just isn't breakage when upgrading to the latest stable release or when applying security patches.
  - peterwwillis 9y ago
    I chose Ubuntu because it was more widely supported by 3rd party software vendors and support companies than Debian. But this doesn't matter, because I still ran into hardware and software compatibility issues, and Ubuntu is more up to date than Debian, meaning Debian would have been even more broken by default. I don't know of a single Linux distro that works out of the box with my laptops. Maybe if I bought a $2,000 laptop that shipped with Linux it would work. It would still be a pain in the ass to update, though. I kind of hate Linux as a desktop now. I've been using it as such for 14 years, and it's only gotten worse.
    - tluyben2 9y ago
      Depends what you need ofcourse; a lot of people buy the newest and fastest but do not need it. Most (90%+) of my dev work works fine on an X220 which I can pick up for $80, has stellar linux support and still really good (14+ hour) battery life. Depends on the use case ofcourse, but when I see what most people around me do on their 2k+ laptops, they could have saved most of that. Also, Ubuntu Unity is just not very good; but Ubuntu or Debian with i3 are perfect. Cannot imagine a better desktop.
    - 9y ago
evmar 9y ago
For Chrome we had to go through a lot of extra effort to make updates not break us. http://neugierig.org/software/chromium/notes/2011/08/zygote.html http://neugierig.org/software/chromium/notes/2011/08/zygote....
- kuschku 9y ago
  Or you could explicitly design the package so that your pre/postinstall scripts ensure that you install to a separate directory, and rename-replace the old directory, so you can’t get half-finished updates. Regarding the rest, if your code has incompatible API breaks between two patch or minor version changes, you’ll need to rethink your development model.
kworker 9y ago
FF usually just CTD after an update.

by rlpb 9y ago

mehrdadn 9y ago

Development release? Currently I'm on 16.04, and I've never been on a development release of anything on Ubuntu. I'm just describing the behavior I usually see in practice (which it seems someone attributed to "D-BUS" [1]). Obviously the logon session doesn't get messed up if all I'm updating is something irrelevant like Firefox, but if I update stuff that would actually affect system components then there's a good chance I'll have to reboot after the update or I'll start seeing weird behavior. This has generally been my experience ever since... any Ubuntu version, really. It's almost ironic that the most robust thing to update in practice is the OS kernel. [1] https://news.ycombinator.com/item?id=16257060 https://news.ycombinator.com/item?id=16257060

rlpb 9y ago
All I can say is that, based on everything I know, that's not the current experience of the majority of users, so it doesn't seem fair for you to generalize this to some architectural problem. I don't know if you unknowingly have some edge case setup or what.
- mehrdadn 9y ago
  Are you reading the same comments I'm writing? I was literally point-by-point saying the opposite of what you seem to have read me writing: > You: All I can say is that, based on everything I know, that's not the current experience of the majority of users >> Me: Yet from everyone's comments here I'm guessing I must be the only one who encounters this. ??? > You: It doesn't seem fair for you to generalize this to some architectural problem. >> Me: I don't get why it happens in every instance, and there might be lots of different reasons in different instances. IPC mismatch is my best guess for a significant fraction of the incidents. ???
- mehrdadn 9y ago
  Also, FYI, update: apparently I'm not the only person in the world experiencing this [1]. But we are the only 2 people in the world experiencing this, so never mind. [1] https://news.ycombinator.com/item?id=16257935 https://news.ycombinator.com/item?id=16257935
beagle3 9y ago
I have been running Ubuntu since 2004, and except for Firefox which tends to destabilize on update, I’ve observed this twice in 14 years; I update weekly or more often, and reboot every few months (usually on a kernel update I want to take hold)
- mehrdadn 9y ago
  Maybe it's because you update often so there are fewer changes in between? I update far less frequently.. it's not my primary OS so it's not like I'm even on it every day (or week). I use it whenever I need to.
  - xfer 9y ago
    Have you filed any bug report or point to one? All i have seen is a lot of handwaving about "IPC mismatch", things will not fix itself unless people actively report/help fix issues.

Valmar 9y ago

Here, on Arch, Firefox updates don't cause me any grief. Only time I've ever need to reboot is after a kernel or DKMS module update. For systemd updates, I can just reload it. For the likes of core components like bash, and major DE updates, I can just lazily use loginctl to terminate all of my sessions, and start fresh. I'm not sure why Firefox would be causing instability until you restart (reboot?), though.

postingatwork 9y ago
Firefox with e10s enabled (all current releases) detects version differences between parent process and and a child process started at a later point in time. Until recently it aborted the entire browser when that happened. I think now they have some logic that tries to keep running with the already open processes and abandoning the incompatible child. Ideally they'd just prefork a template process for children and open fds for everything they need, that way such a detection wouldn't be necessary.
rlpb 9y ago
> I'm not sure why Firefox would be causing instability until you restart (reboot?), though. I get the impression that the UI loads files from disk dynamically, which start mismatching what was already loaded.

peterwwillis 9y ago

Ubuntu user here. Ubuntu is less stable than my second girlfriend, and she tried to stab me once. Lately, every time my co-worker has updated Ubuntu, it has broken his system. He's like my canary in the coalmine. I wait for his system to not fall over before I will update mine.

StudentStuff 9y ago
Maybe its time to consider an OS with better maintainers, like Debian. I've had less issues on unstable/sid over the past few years than I had on the last Ubuntu LTS release (which was what spurred me to Debian). On my other machine, Debian Stretch (and Jessie prior to upgrading) have treated me well, there just isn't breakage when upgrading to the latest stable release or when applying security patches.
- peterwwillis 9y ago
  I chose Ubuntu because it was more widely supported by 3rd party software vendors and support companies than Debian. But this doesn't matter, because I still ran into hardware and software compatibility issues, and Ubuntu is more up to date than Debian, meaning Debian would have been even more broken by default. I don't know of a single Linux distro that works out of the box with my laptops. Maybe if I bought a $2,000 laptop that shipped with Linux it would work. It would still be a pain in the ass to update, though. I kind of hate Linux as a desktop now. I've been using it as such for 14 years, and it's only gotten worse.
  - tluyben2 9y ago
    Depends what you need ofcourse; a lot of people buy the newest and fastest but do not need it. Most (90%+) of my dev work works fine on an X220 which I can pick up for $80, has stellar linux support and still really good (14+ hour) battery life. Depends on the use case ofcourse, but when I see what most people around me do on their 2k+ laptops, they could have saved most of that. Also, Ubuntu Unity is just not very good; but Ubuntu or Debian with i3 are perfect. Cannot imagine a better desktop.
  - 9y ago

evmar 9y ago

For Chrome we had to go through a lot of extra effort to make updates not break us. http://neugierig.org/software/chromium/notes/2011/08/zygote.html http://neugierig.org/software/chromium/notes/2011/08/zygote....

kuschku 9y ago
Or you could explicitly design the package so that your pre/postinstall scripts ensure that you install to a separate directory, and rename-replace the old directory, so you can’t get half-finished updates. Regarding the rest, if your code has incompatible API breaks between two patch or minor version changes, you’ll need to rethink your development model.

kworker 9y ago

FF usually just CTD after an update.