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en:app:ac:best_practices [2016/11/23 23:09] – vytvořeno 410301@muni.czen:app:ac:best_practices [2026/09/02 17:34] (current) – Jakub Jalowiczor
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-====== Stručné návody a taháky ======+====== Troubleshooting ======
  
-Pro správce mísntostí (Hosts):  {{:cs:app:ac:jak-zacit-admin.pdf|návod}} a {{:cs:app:ac:tahak-admin.pdf|tahák}}\\ +===== Audio and microphone =====
-Pro účastníky: {{:cs:app:ac:jak-zacit-ucastnici.pdf|návod}} a {{:cs:app:ac:tahak-ucastnik.pdf|tahák}}\\ +
-Návod pro {{:cs:app:ac:navod-ipad.pdf|iPad}}+
  
-====== Firefox blokuje Adobe Flash plug-in ====== +**Others cannot hear me.**
-Bezpečnostní problémy ve Flashi přivedly Mozillu k tomu, že všechny verze Flash Player Pluginu ve Firefoxu zařadila na výchozí seznam blokovaných doplňků. Plugin je možné aktivovat ručně a to buď pro všechny webové stráhnky nebo konkrétně pro https://connect.cesnet.cz/. Podrobný návod je k dispozici  na https://support.mozilla.org/en-US/kb/why-do-i-have-click-activate-plugins.+
  
-====== Mobilní platformy ====== +  - Check that your microphone is not muted (the microphone button in the toolbar is not crossed out). 
-Pro použití Adobe Connectu na mobilních platformách Andriod i iOS existuje samostatná aplikace Adobe Connect Mobile. Po instalaci nativní aplikace pro Vaší mobilní platformu stále využívejte přístupu přes webový prohlížeč, jinak nebude možné využít přihlášení přes federovanou identitu. Nezadávejte své přihlašovací údaje do aplikace, ale čiňte tak pouze a jedině na stránce svého IdP (univerzity/ústavu). Prohlížeč (systém) pro správném přihlášení sám spustí nebo nabídne spuštění aplikace Adobe Connect Mobile. +  - **⋮ → Settings → Audio** – is the correct microphone selected? Does the indicator move when you speak? 
 +  - Did you allow the browser to use the microphone? Click the lock / camera icon in the address bar, allow access, then reload the page. 
 +  - Is another app using the microphone (Teams, Zoom, Discord)? Close it.
  
-====== Adobe Connect Add-in v Google Chrome ======+**I cannot hear others.**
  
-Popis problému: Google Chrome spustí Meeting v okně prohlížeče nebo nespustí Meeting vůbec pokud je Adobe Connect Add-in nainstalovaný. V Omnibaru prohlížeče je možné si všimnout ikony rozšíření s vykřičníkem:+  * Check the system volume and the **speaker** selection in **Settings → Audio**; use **Test sound**. 
 +  * If you have both headphones and speakers, make sure the audio goes to the ones you are wearing.
  
-Podrobnosti a postup řešení lze nalézt na http://blogs.adobe.com/connectsupport/connect-meetings-opened-from-the-chrome-browser-remain-in-the-browser/+**Echo, howling.**
  
-POZN.: V dialogovém okně nastavení přístupu pro rozšíření, která neběží v sandboxu (Unsandboxed plug-in access)+  * Echo is caused by a microphone picking up sound from speakers. Use **headphones**. 
 +  * Ask others to mute themselves when not speaking; the moderator can spot the culprit from the talking indicator.
  
-{{http://blogs.adobe.com/connectsupport/files/2013/10/chrome-adv-settings-sites.fw_2.png}}+===== Camera =====
  
-je třeba nastavit výjimku pro **connect.cesnet.cz**.+**Others cannot see me.**
  
-====== Poznámky ke konfiguraci klientů na různých OS ======+  - The camera button in the toolbar is not crossed out. 
 +  - **⋮ → Settings → Video** – is the correct camera selected? 
 +  - Allow the browser to use the camera (the icon in the address bar), then reload the page. 
 +  - No other app is using the camera. 
 +  - For an external camera, try a different USB port.
  
-===== Linux =====+===== Entering the room =====
  
-=== Minimální požadavky podle Adobe ===+**I see "Waiting for the host…" and nothing happens.**
  
-  * Presenter/Hosts: Ubuntu 10 (32-bit) +  * You can only enter a **normal (protected)** room after signing in. Click **I am the host** and sign in with eduID. 
-  * Attendees: Ubuntu10; Red Hat® Enterprise Linux® (RHEL) 4.x, 5.x; Novell SUSE® 9.x or 10.x +  * If you have no eduID account, this is a room that a signed-in moderator must create first – **wait** for the meeting to start and reload the page. 
-  * Mozilla Firefox 2x or 3x +  * For a **public** room the sign-in happens automatically within a few seconds; if the dialog does not disappear, reload the page (F5).
-  * Adobe Flash Player 10.1 for all users (hosts, presenters, participants, and administrat+
  
 +**eduID sign-in fails / the page keeps bouncing back.**
  
-=== Tested software configurations ===+  * Try a different browser or a private window (blocked third-party cookies can break sign-in). 
 +  * Check that you are signing in under the correct **home organization**. 
 +  * If it persists, contact support with the time of the attempt and the organization name.
  
-  * x86_64, Firefox 4.0, Adobe Flash 11.0 d1, PulseAudio +**The room asks me for a password / PIN.**
-  * x86_64, Firefox 4.0, Adobe Flash 10.3.162, PulseAudio +
-    * Notes:  +
-      * without Flash-Aid installed, libflashplayer.so directly from the Adobe tarball, nspluginwrapper and other helper libraries are not installed (for example, by Suse) +
-      * Mandriva Cooker distribution+
  
-  * x86_64, Google Chrome 14.x, Adobe Flash 11.0 d1, PulseAudio +  * This is a secured room. Enter the **PIN from the organizer**; it is case-sensitive. See [[:en:app:ac:mistnosti|Meeting rooms]].
-  * x86_64, Google Chrome 14.x, Adobe Flash 10.3 r162, PulseAudio +
-    * Notes:  +
-      * libflashplayer.so straight from the Adobe tarball, nspluginwrapper and other helper libraries are not installed (for example, by Suse) +
-      * According to the version of Google Chrome from the Dev channel was recorded occasional freeze of Flash plugin while rendering a video, the problem is not linked to Adobe Connect directly but is more general +
-      * Mandriva Cooker distribution+
  
-  * i386, Firefox 3.6.18, Adobe Flash 10.3 r181, ALSA +===== Video and performance =====
-    * Notes: +
-      * Ubuntu 10.10+
  
-  * Opera does not belong to supported browsers and integration to Adobe Connect does not work+**Choppy video, delayed audio, "weak connection".**
  
-  * From version 11.0.1.129(beta) Adobe flash includes regression. Adobe Flash plugin stopped using default audio device in ALSA and is accessing directly to hardware. As a result, the user is not able to choose audio output device (for example, through PulseAudio pavucontrol). Adobe Flash plugin does not allow to configure the audio device. Regression is reported in Adobe Bugbase (https://bugbase.adobe.com/index.cfm?event=bug&id=2968177). Adobe does not plan to fix it yet. +  * **⋮ → Performance settings** – lower the video quality or switch to **audio only**. 
-    * One workaround is to change default devices in ''$HOME/.asoundrc'' and not using PulseAudio). You have to write following lines into''.asoundrc'':+  * Turn your own camera off when not speaking. 
 +  * Stop downloads and other apps that load the network; switch to a wired connection.
  
-  defaults.ctl.card 1 +**Screen sharing does not work / shows a black area.**
-  defaults.pcm.card 1+
  
-    * Numbers of the cards can be found in ''/proc/asound/cards'' +  * On macOS, allow the browser under **Screen Recording** in //System Settings → Privacy & Security//, then restart the browser. 
-    * After that, the browser with Adobe Flash has to be restarted +  * To share a video's **audio**, share a **browser tab** and tick //Share audio// (Chrome/Edge).
-    * Other possible (recommended) workaround is to use the current version of Google Chrome with built-in Pepper API Flash Player plugin.+
  
-==== Tested hardware configurations ====+===== Telephone dial-in =====
  
-=== Audio ===  +See [[:en:app:ac:telefon|Joining by telephone – Troubleshooting]].
-  * Intel HDA audio+
  
-=== Video === +===== None of this helped =====
-  * 17ef:480d Lenovo Integrated Webcam [R5U877], uvcvideo 1.0.0 +
-  * 046d:0990 Logitech, Inc. QuickCam Pro 9000, uvcvideo 1.0.0+
  
-  * Brooktree Corporation Bt878 Video Capture+Contact service support (see [[:en:app:ac:zoomterms|Terms of service and privacy]]) and provide:
  
-==== PulseAudio a ALSA ====+  * the room name and approximate time, 
 +  * your browser name and version and operating system, 
 +  * what you did and what happened, 
 +  * ideally a screenshot of the error.
  
-Adobe Flash plugin plays the sound through ALSA. It is necessary to correctly configure routing of the sound between ALSA and the PulsAudio server on the modern Linux distributions with PulseAudio server installed.+===== Illustrated guides (PDF) =====
  
-''.asoundrc'' should be configured followingly: +Connecting and using the service, for participants: {{ :en:app:ac:cesnet-meetings-connecting-and-using.pdf |PDF}}\\ 
- +Organizer's guide (rooms, moderating, telephone): {{ :en:app:ac:cesnet-meetings-organizer-guide.pdf |PDF}}
-  pcm.pulse { type pulse } +
-  ctl.pulse { type pulse } +
-  pcm.!default { type pulse } +
-  ctl.!default { type pulse } +
- +
-==== Unstability of Adobe Connect in connection to audio subsystem ==== +
- +
-Adobe warns about the possible instability of audio subsystem on Adobe Connect with Linux platform  (without stating further details). The possible solution is to turn off the Enhanced audio in Meeting->Preferences->Microphone. +
- +
-{{http://blogs.adobe.com/connectsupport/files/2013/11/mic-enh.fw_.png}} +
- +
-==== Flash a web cameras/video ==== +
- +
-  * Recorded problems while using uvcvideo module with version lower than 1.0.0 +
-    * After some time the Flash plugin stops to grab the video  (camera 046d:0990 Logitech, Inc. QuickCam Pro 9000)+