i3 FAQ - Individual question feed

i3 FAQ - Individual question feedhttps://faq.i3wm.org/questions/Frequently asked questions and answers about the i3 window managerenCopyright i3, 2012Wed, 05 Feb 2014 12:34:54 +0000i3bar random JSON UTF-8 error w/ conkyhttps://faq.i3wm.org/question/3335/i3bar-random-json-utf-8-error-w-conky/Hi, randomly (sometimes 5 Minutes, sometimes 5 hours after bootup), my i3bar, which gets its input from conky an runs on Arch, fails, returning the following in red: Error: could not parse JSON (lexical error: invalid bytes in utf8 string.) To get it to work again, I simply have to restart i3. I tried googleing quite a while, but I didn't find anything helpful for this case… I don't have any special characters like a degree symbol in my conkyrc, my system's completely on UTF-8. The thing that is so creepy about it is the fact that this happens really randomly and I don't even know by what this is caused or how to reproduce it. For example, today, it happened for the first time 2 hours after bootup, then again 3 minutes after restarting and ever since then, it runs stable. I tried disabling every conky element I've got in my rc seperately, but none of them seems to be the cause, it's still happing… Anyone who has a guess where this might come from? Thank you! Edit: So here's a part of the strace output, don't know if this is the relevant section: read(0, 0x9f8512, 62) = -1 EAGAIN (Resource temporarily unavailable) write(2, "[i3bar] Could not parse JSON input (code = 2, message = lexical error: invalid bytes in UTF8 string.): [{\"full_text\":\"CPU:\",\"color\":\"#606060\",\"separator\":false,\"separator_block_width\":0},{\"full_text\":\"1%,1.40GHz\",\"separator\":false,\"separator_block_width\":9},{\"full_text\":\"MEM:\",\"color\":\"#606060\",\"separator\":false,\"separator_block_width\":0},{\"full_text\":\"6;0%,484MiB\",\"separator\":false,\"separator_block_width\":9}, and so it goes on… Any ideas?Sun, 02 Feb 2014 10:24:22 +0000https://faq.i3wm.org/question/3335/i3bar-random-json-utf-8-error-w-conky/Comment by idrei for Hi, randomly (sometimes 5 Minutes, sometimes 5 hours after bootup), my i3bar, which gets its input from conky an runs on Arch, fails, returning the following in red: <pre><code>Error: could not parse JSON (lexical error: invalid bytes in utf8 string.) </code></pre> To get it to work again, I simply have to restart i3. I tried googleing quite a while, but I didn't find anything helpful for this case… I don't have any special characters like a degree symbol in my conkyrc, my system's completely on UTF-8. The thing that is so creepy about it is the fact that this happens really randomly and I don't even know by what this is caused or how to reproduce it. For example, today, it happened for the first time 2 hours after bootup, then again 3 minutes after restarting and ever since then, it runs stable. I tried disabling every conky element I've got in my rc seperately, but none of them seems to be the cause, it's still happing… Anyone who has a guess where this might come from? Thank you! Edit: So here's a part of the strace output, don't know if this is the relevant section: <pre><code>read(0, 0x9f8512, 62) = -1 EAGAIN (Resource temporarily unavailable) write(2, "[i3bar] Could not parse JSON input (code = 2, message = lexical error: invalid bytes in UTF8 string.): [{\"full_text\":\"CPU:\",\"color\":\"#606060\",\"separator\":false,\"separator_block_width\":0},{\"full_text\":\"1%,1.40GHz\",\"separator\":false,\"separator_block_width\":9},{\"full_text\":\"MEM:\",\"color\":\"#606060\",\"separator\":false,\"separator_block_width\":0},{\"full_text\":\"6;0%,484MiB\",\"separator\":false,\"separator_block_width\":9}, </code></pre> and so it goes on… Any ideas? https://faq.i3wm.org/question/3335/i3bar-random-json-utf-8-error-w-conky/?comment=3338#comment-3338Ok thank you, I'm now waiting till it fails again, and then, you'll get the strace-output.Sun, 02 Feb 2014 10:42:50 +0000https://faq.i3wm.org/question/3335/i3bar-random-json-utf-8-error-w-conky/?comment=3338#comment-3338Comment by Michael for Hi, randomly (sometimes 5 Minutes, sometimes 5 hours after bootup), my i3bar, which gets its input from conky an runs on Arch, fails, returning the following in red: <pre><code>Error: could not parse JSON (lexical error: invalid bytes in utf8 string.) </code></pre> To get it to work again, I simply have to restart i3. I tried googleing quite a while, but I didn't find anything helpful for this case… I don't have any special characters like a degree symbol in my conkyrc, my system's completely on UTF-8. The thing that is so creepy about it is the fact that this happens really randomly and I don't even know by what this is caused or how to reproduce it. For example, today, it happened for the first time 2 hours after bootup, then again 3 minutes after restarting and ever since then, it runs stable. I tried disabling every conky element I've got in my rc seperately, but none of them seems to be the cause, it's still happing… Anyone who has a guess where this might come from? Thank you! Edit: So here's a part of the strace output, don't know if this is the relevant section: <pre><code>read(0, 0x9f8512, 62) = -1 EAGAIN (Resource temporarily unavailable) write(2, "[i3bar] Could not parse JSON input (code = 2, message = lexical error: invalid bytes in UTF8 string.): [{\"full_text\":\"CPU:\",\"color\":\"#606060\",\"separator\":false,\"separator_block_width\":0},{\"full_text\":\"1%,1.40GHz\",\"separator\":false,\"separator_block_width\":9},{\"full_text\":\"MEM:\",\"color\":\"#606060\",\"separator\":false,\"separator_block_width\":0},{\"full_text\":\"6;0%,484MiB\",\"separator\":false,\"separator_block_width\":9}, </code></pre> and so it goes on… Any ideas? https://faq.i3wm.org/question/3335/i3bar-random-json-utf-8-error-w-conky/?comment=3336#comment-3336strace i3bar to see what it’s choking on. I.e.: strace -f -p $(pidof i3bar) -s 2048Sun, 02 Feb 2014 10:27:03 +0000https://faq.i3wm.org/question/3335/i3bar-random-json-utf-8-error-w-conky/?comment=3336#comment-3336Comment by idrei for Hi, randomly (sometimes 5 Minutes, sometimes 5 hours after bootup), my i3bar, which gets its input from conky an runs on Arch, fails, returning the following in red: <pre><code>Error: could not parse JSON (lexical error: invalid bytes in utf8 string.) </code></pre> To get it to work again, I simply have to restart i3. I tried googleing quite a while, but I didn't find anything helpful for this case… I don't have any special characters like a degree symbol in my conkyrc, my system's completely on UTF-8. The thing that is so creepy about it is the fact that this happens really randomly and I don't even know by what this is caused or how to reproduce it. For example, today, it happened for the first time 2 hours after bootup, then again 3 minutes after restarting and ever since then, it runs stable. I tried disabling every conky element I've got in my rc seperately, but none of them seems to be the cause, it's still happing… Anyone who has a guess where this might come from? Thank you! Edit: So here's a part of the strace output, don't know if this is the relevant section: <pre><code>read(0, 0x9f8512, 62) = -1 EAGAIN (Resource temporarily unavailable) write(2, "[i3bar] Could not parse JSON input (code = 2, message = lexical error: invalid bytes in UTF8 string.): [{\"full_text\":\"CPU:\",\"color\":\"#606060\",\"separator\":false,\"separator_block_width\":0},{\"full_text\":\"1%,1.40GHz\",\"separator\":false,\"separator_block_width\":9},{\"full_text\":\"MEM:\",\"color\":\"#606060\",\"separator\":false,\"separator_block_width\":0},{\"full_text\":\"6;0%,484MiB\",\"separator\":false,\"separator_block_width\":9}, </code></pre> and so it goes on… Any ideas? https://faq.i3wm.org/question/3335/i3bar-random-json-utf-8-error-w-conky/?comment=3339#comment-3339Ehm… the output's kinda endless, is there something I should look for in detail? It's curious: this time, it took about half and an hour till this happend… Btw. I let conky refresh every second, don't know if this is relevant, perhaps it isn't, but what do I know.Sun, 02 Feb 2014 15:38:54 +0000https://faq.i3wm.org/question/3335/i3bar-random-json-utf-8-error-w-conky/?comment=3339#comment-3339Answer by idrei for Hi, randomly (sometimes 5 Minutes, sometimes 5 hours after bootup), my i3bar, which gets its input from conky an runs on Arch, fails, returning the following in red: <pre><code>Error: could not parse JSON (lexical error: invalid bytes in utf8 string.) </code></pre> To get it to work again, I simply have to restart i3. I tried googleing quite a while, but I didn't find anything helpful for this case… I don't have any special characters like a degree symbol in my conkyrc, my system's completely on UTF-8. The thing that is so creepy about it is the fact that this happens really randomly and I don't even know by what this is caused or how to reproduce it. For example, today, it happened for the first time 2 hours after bootup, then again 3 minutes after restarting and ever since then, it runs stable. I tried disabling every conky element I've got in my rc seperately, but none of them seems to be the cause, it's still happing… Anyone who has a guess where this might come from? Thank you! Edit: So here's a part of the strace output, don't know if this is the relevant section: <pre><code>read(0, 0x9f8512, 62) = -1 EAGAIN (Resource temporarily unavailable) write(2, "[i3bar] Could not parse JSON input (code = 2, message = lexical error: invalid bytes in UTF8 string.): [{\"full_text\":\"CPU:\",\"color\":\"#606060\",\"separator\":false,\"separator_block_width\":0},{\"full_text\":\"1%,1.40GHz\",\"separator\":false,\"separator_block_width\":9},{\"full_text\":\"MEM:\",\"color\":\"#606060\",\"separator\":false,\"separator_block_width\":0},{\"full_text\":\"6;0%,484MiB\",\"separator\":false,\"separator_block_width\":9}, </code></pre> and so it goes on… Any ideas? https://faq.i3wm.org/question/3335/i3bar-random-json-utf-8-error-w-conky/?answer=3341#post-id-3341Sorry I have to answer myself but there seems to be no other way… Anyway, I took two logs with strace, one good, one bad, and there the exactely same until it comes to this line: read(0, 0x1102690, 896) = -1 EAGAIN (Resource temporarily unavailable) After that line, the good, where everthing's fine looks like the following: poll([{fd=5, events=POLLIN|POLLOUT}], 1, 4294967295) = 1 ([{fd=5, revents=POLLOUT}]) writev(5, [{"F\0\5\0\4\0\300\0\5\0\300\0\0\ […] … and the bad, where it fails, looks like: write(2, "[i3bar] Could not parse JSON input (code = 2, message = lexical error: invalid bytes in UTF8 string.): [ {\"full_text\":\"CPU:\",\"color\":\"#606060\",\"separator\":false,\"separator_block_width\":0}, […] When it finally comes to writev in the bad one, there are things like `!!!\377!!!\377F` which doesn't seem to be there in the good one… But I still cannot see why all this is happening. :( Sun, 02 Feb 2014 17:40:48 +0000https://faq.i3wm.org/question/3335/i3bar-random-json-utf-8-error-w-conky/?answer=3341#post-id-3341Comment by idrei for Sorry I have to answer myself but there seems to be no other way… Anyway, I took two logs with strace, one good, one bad, and there the exactely same until it comes to this line: <pre><code>read(0, 0x1102690, 896) = -1 EAGAIN (Resource temporarily unavailable) </code></pre> After that line, the good, where everthing's fine looks like the following: <pre><code>poll([{fd=5, events=POLLIN|POLLOUT}], 1, 4294967295) = 1 ([{fd=5, revents=POLLOUT}]) writev(5, [{"F\0\5\0\4\0\300\0\5\0\300\0\0\ […] </code></pre> … and the bad, where it fails, looks like: <pre><code>write(2, "[i3bar] Could not parse JSON input (code = 2, message = lexical error: invalid bytes in UTF8 string.): [ {\"full_text\":\"CPU:\",\"color\":\"#606060\",\"separator\":false,\"separator_block_width\":0}, […] </code></pre> When it finally comes to writev in the bad one, there are things like <code>!!!\377!!!\377F</code> which doesn't seem to be there in the good one… But I still cannot see why all this is happening. :( https://faq.i3wm.org/question/3335/i3bar-random-json-utf-8-error-w-conky/?comment=3359#comment-3359So? Does no answer mean I should better write a bugreport for this??Tue, 04 Feb 2014 08:54:12 +0000https://faq.i3wm.org/question/3335/i3bar-random-json-utf-8-error-w-conky/?comment=3359#comment-3359Comment by idrei for Sorry I have to answer myself but there seems to be no other way… Anyway, I took two logs with strace, one good, one bad, and there the exactely same until it comes to this line: <pre><code>read(0, 0x1102690, 896) = -1 EAGAIN (Resource temporarily unavailable) </code></pre> After that line, the good, where everthing's fine looks like the following: <pre><code>poll([{fd=5, events=POLLIN|POLLOUT}], 1, 4294967295) = 1 ([{fd=5, revents=POLLOUT}]) writev(5, [{"F\0\5\0\4\0\300\0\5\0\300\0\0\ […] </code></pre> … and the bad, where it fails, looks like: <pre><code>write(2, "[i3bar] Could not parse JSON input (code = 2, message = lexical error: invalid bytes in UTF8 string.): [ {\"full_text\":\"CPU:\",\"color\":\"#606060\",\"separator\":false,\"separator_block_width\":0}, […] </code></pre> When it finally comes to writev in the bad one, there are things like <code>!!!\377!!!\377F</code> which doesn't seem to be there in the good one… But I still cannot see why all this is happening. :( https://faq.i3wm.org/question/3335/i3bar-random-json-utf-8-error-w-conky/?comment=3373#comment-3373Done: bugs.i3wm.org/report/ticket/1175Wed, 05 Feb 2014 12:34:54 +0000https://faq.i3wm.org/question/3335/i3bar-random-json-utf-8-error-w-conky/?comment=3373#comment-3373Comment by TonyC for Sorry I have to answer myself but there seems to be no other way… Anyway, I took two logs with strace, one good, one bad, and there the exactely same until it comes to this line: <pre><code>read(0, 0x1102690, 896) = -1 EAGAIN (Resource temporarily unavailable) </code></pre> After that line, the good, where everthing's fine looks like the following: <pre><code>poll([{fd=5, events=POLLIN|POLLOUT}], 1, 4294967295) = 1 ([{fd=5, revents=POLLOUT}]) writev(5, [{"F\0\5\0\4\0\300\0\5\0\300\0\0\ […] </code></pre> … and the bad, where it fails, looks like: <pre><code>write(2, "[i3bar] Could not parse JSON input (code = 2, message = lexical error: invalid bytes in UTF8 string.): [ {\"full_text\":\"CPU:\",\"color\":\"#606060\",\"separator\":false,\"separator_block_width\":0}, […] </code></pre> When it finally comes to writev in the bad one, there are things like <code>!!!\377!!!\377F</code> which doesn't seem to be there in the good one… But I still cannot see why all this is happening. :( https://faq.i3wm.org/question/3335/i3bar-random-json-utf-8-error-w-conky/?comment=3370#comment-3370It's possible this is a bug in the bar. Write a bug report and I'll look into it.Wed, 05 Feb 2014 00:29:18 +0000https://faq.i3wm.org/question/3335/i3bar-random-json-utf-8-error-w-conky/?comment=3370#comment-3370