Merge pull request #3550 from tlercher/3535-display-check
Fix #3535 - Check for DISPLAY when requesting version information
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b35c56687d
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@ -55,6 +55,13 @@ static yajl_callbacks version_callbacks = {
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*
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*/
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void display_running_version(void) {
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if (getenv("DISPLAY") == NULL) {
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fprintf(stderr, "\nYour DISPLAY environment variable is not set.\n");
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fprintf(stderr, "Are you running i3 via SSH or on a virtual console?\n");
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fprintf(stderr, "Try DISPLAY=:0 i3 --moreversion\n");
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exit(EXIT_FAILURE);
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}
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char *pid_from_atom = root_atom_contents("I3_PID", conn, conn_screen);
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if (pid_from_atom == NULL) {
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/* If I3_PID is not set, the running version is older than 4.2-200. */
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