Public bug reported:
libnghttp2 was recently updated on my machine
Start-Date: 2026-07-06 08:59:37
Commandline: /usr/bin/unattended-upgrade
Upgrade: libnghttp2-14:amd64 (1.59.0-1ubuntu0.3, 1.59.0-1ubuntu0.4)
End-Date: 2026-07-06 08:59:37
and i now am having problems connecting to several different resources, with
http/2 being listed as a likely cause
```
$ GIT_TRACE=1 GIT_TRANSFER_TRACE=1 GIT_CURL_VERBOSE=1 git push
[...]
10:17:13.640137 http.c:804 => Send header:
10:18:13.837692 http.c:845 == Info: HTTP/2 stream 5 was not closed
cleanly: PROTOCOL_ERROR (err 1)
10:18:13.837756 http.c:845 == Info: Connection #0 to host
<redacted> left intact
error: RPC failed; curl 92 HTTP/2 stream 5 was not closed cleanly:
PROTOCOL_ERROR (err 1)
send-pack: unexpected disconnect while reading sideband packet
fatal: the remote end hung up unexpectedly
```
i also get an error trying to use the `ubuntu-bug` reporting tool
```
*** Uploading problem information
The collected information is being sent to the bug tracking system.
This might take a few minutes.
77.45839636913767%
*** Error: Network problem
Cannot connect to crash database, please check your Internet connection.
```
```
== Package =================================
libnghttp2-14 1.59.0-1ubuntu0.4
== ProblemType =================================
Bug
== ApportVersion =================================
2.28.1-0ubuntu3.8
== Architecture =================================
amd64
== CasperMD5CheckResult =================================
unknown
== Date =================================
Mon Jul 6 10:39:23 2026
== Dependencies =================================
gcc-14-base 14.2.0-4ubuntu2~24.04.1
libc6 2.39-0ubuntu8.7
libgcc-s1 14.2.0-4ubuntu2~24.04.1
libidn2-0 2.3.7-2build1.1
libunistring5 1.1-2build1.1
== DistroRelease =================================
Ubuntu 24.04
== PackageArchitecture =================================
amd64
== ProcCpuinfoMinimal =================================
processor : 15
vendor_id : GenuineIntel
cpu family : 6
model : 141
model name : 11th Gen Intel(R) Core(TM) i7-11850H @ 2.50GHz
stepping : 1
microcode : 0xffffffff
cpu MHz : 2496.000
cache size : 24576 KB
physical id : 0
siblings : 16
core id : 7
cpu cores : 8
apicid : 15
initial apicid : 15
fpu : yes
fpu_exception : yes
cpuid level : 27
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm
constant_tsc arch_perfmon rep_good nopl xtopology tsc_reliable nonstop_tsc
cpuid tsc_known_freq pni pclmulqdq vmx ssse3 fma cx16 pdcm pcid sse4_1 sse4_2
x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor
lahf_lm abm 3dnowprefetch ssbd ibrs ibpb stibp ibrs_enhanced tpr_shadow ept
vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid avx512f
avx512dq rdseed adx smap avx512ifma clflushopt clwb avx512cd sha_ni avx512bw
avx512vl xsaveopt xsavec xgetbv1 xsaves vnmi avx512vbmi umip avx512_vbmi2 gfni
vaes vpclmulqdq avx512_vnni avx512_bitalg avx512_vpopcntdq rdpid movdiri
movdir64b fsrm avx512_vp2intersect md_clear ibt flush_l1d arch_capabilities
vmx flags : vnmi invvpid ept_x_only ept_ad ept_1gb tsc_offset vtpr ept
vpid unrestricted_guest ept_mode_based_exec tsc_scaling
bugs : spectre_v1 spectre_v2 spec_store_bypass swapgs retbleed
eibrs_pbrsb bhi spectre_v2_user its its_native_only
bogomips : 4992.00
clflush size : 64
cache_alignment : 64
address sizes : 39 bits physical, 48 bits virtual
power management:
== ProcEnviron =================================
LANG=C.UTF-8
PATH=(custom, no user)
SHELL=/bin/bash
TERM=xterm-256color
XDG_RUNTIME_DIR=<set>
== SourcePackage =================================
nghttp2
== Tags =================================
noble wayland-session
== Uname =================================
Linux 6.18.33.2-microsoft-standard-WSL2 x86_64
== UpgradeStatus =================================
No upgrade log present (probably fresh install)
```
** Affects: nghttp2 (Ubuntu)
Importance: Undecided
Status: New
--
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https://bugs.launchpad.net/bugs/2159650
Title:
multiple http/2 connection failures with libnghttp2-14:amd64
1.59.0-1ubuntu0.4
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