Control: tag -1 moreinfo Hi Colm, Long time no see! On Thu, 2025-07-31 at 16:22 +0100, Colm Buckley wrote: > Source: linux > Version: 6.12.38+deb12 > Severity: normal > X-Debbugs-Cc: colm@tuatha.org, nic_swsd@realtek.com, romieu@fr.zoreil.com, netdev@vger.kernel.org > > Dear Maintainer, > > Recent Debian kernels in the 6.12 series (in particular, from > 6.12.33+deb12-amd64 onwards, up to and including 6.12.38+deb12-amd64) > are causing serious slowdowns in receive performance on my (Realtek) > ethernet connection. Regardless of protocol or connection address, > read speed seems to be limited to between 5 and 10 Mb/s. > > Installing the r8168 module using r8168-dkms works fine, and read > speeds are up to 1000Mb/s as expected. > > The lspci output for this card is: [...] Please also provide: - output of "lspci -vnn -s 2c:00.0" (this shows numeric IDs as well as names) - the kernel log for a boot using the r8169 driver - the installed version of firmware-realtek (if any) (In future you should use "reportbug kernel" to report a bug in the running kernel, which will automatically such information in the report.) Ben. -- Ben Hutchings Experience is what causes a person to make new mistakes instead of old ones.
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