After every exit downloads 8,5 GB on Linux. Why?

[Dworfkin]

And every time i start game - it always download shaders for AGES! Over and over again.
Pop_OS. Running with Proton 8.0.5. No problems IN GAME at all. But this two things drives me mad.

[OlenaBeana]

I have the same Issue, The game is playable, but I haven't been able to find a solution except for waiting ages every time I want to play.

[zozo]

Same issue here
When I look at the download info it says "shader pre-caching update"
I think this might somehow be related to vulkan shaders taking a ridiculous amount of time to precache(even with the download) so I always skip it.
Mint with ge-proton8-27

I'm going to disable shader precaching in steam>settings>downloads>shader pre-caching and see if it fixes the issue.

[stratacast1]

Dang you guys can play the game? Not fair

[eishai1]

I have exactly the same problem. After closing the game or opening Steam again, I have to wait for the 8.5GB download. I play the game under nobara 39 otherwise without any problems.

[Dworfkin]

Today i closed game and ONCE it didt start download anything. I played solo sometime, and after that i tried to host game. My friend could't connect to me. After reboot AND downloading 8+ GB - he can do it,

[BigHat]

I have a guess It's the content in steamapps/shadercache/1203620/ that fails validation after game exit, and re-downloads the shader pre-cache in an infinite cycle of stupid.

To rule that out or confirm it I am trying this:
Disable Shader Pre-caching from Steam > Settings > Downloads > Shader Precaching

Not really a true fix, since it affects all other games' shader caching, but whatever, I wanna play without downloading 8GB everytime I exit.

[Guineapig]

Same. It's pretty frustrating. My Internet is not very fast... I can't download 8gb every time I quit a game... the only solution I found is to put steam in offline mode. When I disable shader precaching as mentioned above, it downloads "only" 2,4 Gb.
I don't see a valid reason as why

[Sophie La Li]

Second that. On every start of steam and on every shut down of the game it downloads 8 GB of presumably shader cache data. On game start it then takes ages for re-processing the shaders. Disabling the shader cache is not really an option. Especially since i can't disable this per game. Really annoying and not good for the disc either.

Might be Steam(-for-Linux) issue though and not one of this game in particular:
https://github.com/ValveSoftware/steam-for-linux/issues/10285

[zozo]

Earlier this week I had toggled shader precaching off and turned it on again later and it was fine for a day or two. However, today it started the download again.

After reading through github it seems the similar issue of ALL games randomly having a shadercache "update" to download has existed since at least 2021 which follows my experience but don't know if this related issue we're having is the same.

I looked through my steam logs and with my limited knowledge I see "Can't read enough bytes for cache file header, skipping" for processing of 1203620(Enshrouded) shader cache files with a later a call to start redownloading. This isn't quite the same as what I'm seeing from the github op's logs but is identical to the logs of another poster and both have the same result of starting the redownload of the cache. I can see both the shadercache folder and the 8.5GB file in question on my system. I'll go post on github in a bit because this is about as far as my knowledge takes me and I'm unsure if there's something I can do on my end about this.

For now, my non-solution is to just pause the download and never let it finish as the game will run without it. I also have steam auto-downloads scheduled to 5 or 6AM so they wont run on startup. Hopefully someone smarter than me might figure more out.

[Guineapig]

Hm. I can't fully confirm on that. (And for now not adding anything to the github)
I do have shader downloads every now and then, but rarely above all in all 5MB and I can't think of a day where this would be the case for all installed games - just a few. I have about 25 games installed.
Enshrouded is the only exception with huge downloads every time I quit the game, start steam, boot ... it downloads 8+GB and then verifies / installs forever. My M.2 disks are pretty new and pretty fast.
I don't seem to have this indication in my logs... kinda sad. I have to move this to an unmouted disk for now and play something else ... can't download 8GB every day multiple times.

[Beorn]

In the Steam Settings -> Downloads -> there are settings for using Shader Pre-Caching. Have you tried turning it off?

[Judaspriester]

Same issue here on manjaro (arch). my internet connection is fast enough so that it doesn't take ages, still it's very anoying.

[stratacast1]

Same issue here. I have been able to play a few times. I have to spend 10-20 minutes trying a bunch of different combinations to even get the game to start

[Monokel777]

same Problem here, sometimes even after a reboot

[Salzi]

+1
Don't know if it is a game issue or a proton/steam issue.
Will try to disable pre caching til it's sorted out.

---

Maybe the shader_log.txt content will help to sort something out.

 [2024-02-04 09:41:57] Committed bucket 2770596 (AppID 1203620) from 7317184113369869924 to 8050251029643203009.
[2024-02-04 09:41:57] Committed bucket 2770596 (AppID 1203620) contains file 'fozpipelinesv6\steam_pipeline_cache.foz'.
[2024-02-04 09:41:57] [AppID 1203620] Finished Shader Swarm download job: No Error
[2024-02-04 09:41:57] [AppID 1467450] Starting Shader Swarm download job.
[2024-02-04 09:41:57] Processing downloaded cache for AppID 1203620, BucketID 2770596.
[2024-02-04 09:41:57] [AppID 1467450] Target manifest 5533096312757511616 of size 563676 key SteamSwarm / G7:VulkanPipelinesV6.
[2024-02-04 09:41:57] [AppID 1467450] Source manifest 3388714564599114117 of size 235202.
[2024-02-04 09:41:57] Starting processing job for app 1203620!
[2024-02-04 09:41:57] CProcessShaderCacheJob done for AppID 1203620.
[2024-02-04 09:41:57] Setting MESA_GLSL_CACHE_DIR=/mnt/3eebcdfe-ff5c-4250-a650-9ba6418d0b1c/SteamLibrary/steamapps/shadercache/1203620 MESA_DISK_CACHE_READ_ONLY_FOZ_DBS=steam_cache,steam_precompiled,steam_precompiled_904f69d2b1b44b65,steam_precompiled_6a3fb86fd0e4dff0
[2024-02-04 09:41:57] Starting replay of FOZ databases for AppID 1203620 with /home/salzi/.steam/debian-installation/ubuntu12_32/../ubuntu12_64/fossilize_replay in:
[2024-02-04 09:41:57]   /mnt/3eebcdfe-ff5c-4250-a650-9ba6418d0b1c/SteamLibrary/steamapps/shadercache/1203620/fozpipelinesv6/steamapp_pipeline_cache.foz.
[2024-02-04 09:41:57]   /mnt/3eebcdfe-ff5c-4250-a650-9ba6418d0b1c/SteamLibrary/steamapps/shadercache/1203620/fozpipelinesv6/steam_pipeline_cache.foz.
[2024-02-04 09:41:58] Committed bucket 3957926 (AppID 1467450) from 3388714564599114117 to 5533096312757511616.
[2024-02-04 09:41:58] Committed bucket 3957926 (AppID 1467450) contains file 'fozpipelinesv6\steam_pipeline_cache.foz'.
[2024-02-04 09:41:58] [AppID 1467450] Finished Shader Swarm download job: No Error
[2024-02-04 09:42:00] Still replaying 1203620 (0%, 0/254560).
[2024-02-04 09:42:10] Still replaying 1203620 (53%, 137075/256058).
[2024-02-04 09:42:20] Still replaying 1203620 (83%, 214367/256680).
[2024-02-04 09:42:25] Found 2 buckets for AppId 1084600 CompatTool: proton_experimental:
[2024-02-04 09:42:25] SteamSwarm / G7:VulkanPipelinesV6_904f69d2b1b44b65
[2024-02-04 09:42:25] SteamSwarm / G7:VulkanPipelinesV6_6a3fb86fd0e4dff0
[2024-02-04 09:42:25] [ AppID 1084600 ] Queuing depot manifest 1170137486495499989 (90176523 bytes) for bucket ID 10894967, type SteamSwarm/G7:VulkanPipelinesV6_904f69d2b1b44b65.
[2024-02-04 09:42:30] Still replaying 1203620 (85%, 218552/256724).
[2024-02-04 09:42:40] Still replaying 1203620 (99%, 255691/257013).
[2024-02-04 09:42:41] Done with replay, merging validation whitelist in /mnt/3eebcdfe-ff5c-4250-a650-9ba6418d0b1c/SteamLibrary/steamapps/shadercache/1203620/fozpipelinesv6.
[2024-02-04 09:42:41] Processing FOZ cache file at /mnt/3eebcdfe-ff5c-4250-a650-9ba6418d0b1c/SteamLibrary/steamapps/shadercache/1203620/fozpipelinesv6/steam_pipeline_cache_whitelist.1.foz
[2024-02-04 09:42:41] Processing FOZ cache file at /mnt/3eebcdfe-ff5c-4250-a650-9ba6418d0b1c/SteamLibrary/steamapps/shadercache/1203620/fozpipelinesv6/steam_pipeline_cache_whitelist.2.foz
[2024-02-04 09:42:41] Processing FOZ cache file at /mnt/3eebcdfe-ff5c-4250-a650-9ba6418d0b1c/SteamLibrary/steamapps/shadercache/1203620/fozpipelinesv6/steam_pipeline_cache_whitelist.3.foz
[2024-02-04 09:42:41] Processing FOZ cache file at /mnt/3eebcdfe-ff5c-4250-a650-9ba6418d0b1c/SteamLibrary/steamapps/shadercache/1203620/fozpipelinesv6/steam_pipeline_cache_whitelist.4.foz
[2024-02-04 09:42:41] Processing FOZ cache file at /mnt/3eebcdfe-ff5c-4250-a650-9ba6418d0b1c/SteamLibrary/steamapps/shadercache/1203620/fozpipelinesv6/steam_pipeline_cache_whitelist.5.foz
[2024-02-04 09:42:41] Processing FOZ cache file at /mnt/3eebcdfe-ff5c-4250-a650-9ba6418d0b1c/SteamLibrary/steamapps/shadercache/1203620/fozpipelinesv6/steam_pipeline_cache_whitelist.6.foz
[2024-02-04 09:42:41] Processing FOZ cache file at /mnt/3eebcdfe-ff5c-4250-a650-9ba6418d0b1c/SteamLibrary/steamapps/shadercache/1203620/fozpipelinesv6/steam_pipeline_cache_whitelist.7.foz
[2024-02-04 09:42:41] Done with merging whitelist(s), merging replay cache fragments in /mnt/3eebcdfe-ff5c-4250-a650-9ba6418d0b1c/SteamLibrary/steamapps/shadercache/1203620/fozpipelinesv6.
[2024-02-04 09:42:41] Processing FOZ cache file at /mnt/3eebcdfe-ff5c-4250-a650-9ba6418d0b1c/SteamLibrary/steamapps/shadercache/1203620/fozpipelinesv6/replay_cache.456cec0ca4065505dc0740a97fa8478b.1.foz
[2024-02-04 09:42:41] Can't read enough bytes for cache file header, skipping.
[2024-02-04 09:42:41] Processing FOZ cache file at /mnt/3eebcdfe-ff5c-4250-a650-9ba6418d0b1c/SteamLibrary/steamapps/shadercache/1203620/fozpipelinesv6/replay_cache.456cec0ca4065505dc0740a97fa8478b.2.foz
[2024-02-04 09:42:41] Can't read enough bytes for cache file header, skipping.
[2024-02-04 09:42:41] Processing FOZ cache file at /mnt/3eebcdfe-ff5c-4250-a650-9ba6418d0b1c/SteamLibrary/steamapps/shadercache/1203620/fozpipelinesv6/replay_cache.456cec0ca4065505dc0740a97fa8478b.3.foz
[2024-02-04 09:42:41] Can't read enough bytes for cache file header, skipping.
[2024-02-04 09:42:41] Processing FOZ cache file at /mnt/3eebcdfe-ff5c-4250-a650-9ba6418d0b1c/SteamLibrary/steamapps/shadercache/1203620/fozpipelinesv6/replay_cache.456cec0ca4065505dc0740a97fa8478b.4.foz
[2024-02-04 09:42:41] FOZ underflow, file truncated?
[2024-02-04 09:42:41] Processing FOZ cache file at /mnt/3eebcdfe-ff5c-4250-a650-9ba6418d0b1c/SteamLibrary/steamapps/shadercache/1203620/fozpipelinesv6/replay_cache.456cec0ca4065505dc0740a97fa8478b.5.foz
[2024-02-04 09:42:41] Can't read enough bytes for cache file header, skipping.
[2024-02-04 09:42:41] Processing FOZ cache file at /mnt/3eebcdfe-ff5c-4250-a650-9ba6418d0b1c/SteamLibrary/steamapps/shadercache/1203620/fozpipelinesv6/replay_cache.456cec0ca4065505dc0740a97fa8478b.6.foz
[2024-02-04 09:42:41] Processing FOZ cache file at /mnt/3eebcdfe-ff5c-4250-a650-9ba6418d0b1c/SteamLibrary/steamapps/shadercache/1203620/fozpipelinesv6/replay_cache.456cec0ca4065505dc0740a97fa8478b.7.foz
[2024-02-04 09:42:41] Done with merging potential NVIDIA fragments.
[2024-02-04 09:42:41] [ App ID 1203620 ] fossilize_replay completed, remove from build queue.
[2024-02-04 09:42:41] Destroyed compile job 1203620.