Hello @steamlinux, can you check dmesg for a steamwebhelper segfault? If there is, then this is most likely the same issue as #5061.
yes, I have segfaults
[ 8240.243812] steamwebhelper[1073]: segfault at 7fa886f7cb20 ip 00007fa1ebb3f3ad sp 00007ffe65eeb7f0 error 6 in libjemalloc.so.1[7fa1ebb3b000+34000]
[10554.627217] steamwebhelper[10283]: segfault at 7fc823de4880 ip 00007fc2c435f3ad sp 00007ffe426d5070 error 6 in libjemalloc.so.1[7fc2c435b000+34000]
....
[19954.655993] steamwebhelper[31900]: segfault at 7f0639d044c0 ip 00007f05386b73ad sp 00007ffd3981c740 error 6 in libjemalloc.so.1[7f05386b3000+34000]
[20751.728374] steamwebhelper[9069]: segfault at 7f8ca9497d80 ip 00007f889a2c73ad sp 00007ffc0243a5b0 error 6 in libjemalloc.so.1[7f889a2c3000+34000]
[23305.379522] steamwebhelper[13614]: segfault at 7f5d1a8c2f00 ip 00007f5d1a68f20d sp 00007ffe9f54f150 error 4 in libjemalloc.so.1[7f5d1a68b000+34000]
this is bug libjemalloc?
# cat /etc/ld.so.preload
/usr/lib/x86_64-linux-gnu/libjemalloc.so.1
Nothing extracted yet.
Your system information
Steam load one core at 100%
Steps for reproducing this issue:
I don't know, why steam load one core at 100%
run steam and wait 30-60 min
try use messages, launch and close game
I have this bug 1.5 - 3 weeks
my system